CVE-2021-21348 (GCVE-0-2021-21348)
Vulnerability from cvelistv5
Published
2021-03-22 23:45
Modified
2026-10-07 18:45
Severity ?
5.3 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE
  • CWE-400 - Uncontrolled Resource Consumption
  • CWE-502 - Deserialization of Untrusted Data
Summary
XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is a vulnerability which may allow a remote attacker to occupy a thread that consumes maximum CPU time and will never return. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. If you rely on XStream's default blacklist of the Security Framework, you will have to use at least version 1.4.16.
References
https://x-stream.github.io/security.html#workaround x_refsource_MISC
http://x-stream.github.io/changes.html#1.4.16 x_refsource_MISC
https://github.com/x-stream/xstream/security/advisories/GHSA-56p8-3fh9-4cvq x_refsource_CONFIRM
https://x-stream.github.io/CVE-2021-21348.html x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2021/04/msg00002.html mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/r9ac71b047767205aa22e3a08cb33f3e0586de6b2fac48b425c6e16b0%40%3Cdev.jmeter.apache.org%3E mailing-list, x_refsource_MLIST
https://lists.apache.org/thread.html/r8244fd0831db894d5e89911ded9c72196d395a90ae655414d23ed0dd%40%3Cusers.activemq.apache.org%3E mailing-list, x_refsource_MLIST
https://security.netapp.com/advisory/ntap-20210430-0002/ x_refsource_CONFIRM
https://www.oracle.com//security-alerts/cpujul2021.html x_refsource_MISC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/22KVR6B5IZP3BGQ3HPWIO2FWWCKT3DHP/ vendor-advisory, x_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QGXIU3YDPG6OGTDHMBLAFN7BPBERXREB/ vendor-advisory, x_refsource_FEDORA
https://www.oracle.com/security-alerts/cpuoct2021.html x_refsource_MISC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PVPHZA7VW2RRSDCOIPP2W6O5ND254TU7/ vendor-advisory, x_refsource_FEDORA
https://www.debian.org/security/2021/dsa-5004 vendor-advisory, x_refsource_DEBIAN
https://www.oracle.com/security-alerts/cpujan2022.html x_refsource_MISC
Impacted products
Vendor Product Version
x-stream xstream Version: < 1.4.16
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T18:09:15.691Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://x-stream.github.io/security.html#workaround"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "http://x-stream.github.io/changes.html#1.4.16"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/x-stream/xstream/security/advisories/GHSA-56p8-3fh9-4cvq"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://x-stream.github.io/CVE-2021-21348.html"
          },
          {
            "name": "[debian-lts-announce] 20210403 [SECURITY] [DLA 2616-1] libxstream-java security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2021/04/msg00002.html"
          },
          {
            "name": "[jmeter-dev] 20210406 [GitHub] [jmeter] sseide opened a new pull request #655: update x-stream to 1.4.16 (from 1.4.15)",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.apache.org/thread.html/r9ac71b047767205aa22e3a08cb33f3e0586de6b2fac48b425c6e16b0%40%3Cdev.jmeter.apache.org%3E"
          },
          {
            "name": "[activemq-users] 20210427 Release date for ActiveMQ v5.16.2 to fix CVEs",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.apache.org/thread.html/r8244fd0831db894d5e89911ded9c72196d395a90ae655414d23ed0dd%40%3Cusers.activemq.apache.org%3E"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20210430-0002/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.oracle.com//security-alerts/cpujul2021.html"
          },
          {
            "name": "FEDORA-2021-fbad11014a",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/22KVR6B5IZP3BGQ3HPWIO2FWWCKT3DHP/"
          },
          {
            "name": "FEDORA-2021-d894ca87dc",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QGXIU3YDPG6OGTDHMBLAFN7BPBERXREB/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
          },
          {
            "name": "FEDORA-2021-5e376c0ed9",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PVPHZA7VW2RRSDCOIPP2W6O5ND254TU7/"
          },
          {
            "name": "DSA-5004",
            "tags": [
              "vendor-advisory",
              "x_refsource_DEBIAN",
              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2021/dsa-5004"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-21348",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-07T18:44:55.892035Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-07T18:45:09.131Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "xstream",
          "vendor": "x-stream",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.4.16"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is a vulnerability which may allow a remote attacker to occupy a thread that consumes maximum CPU time and will never return. No user is affected, who followed the recommendation to setup XStream\u0027s security framework with a whitelist limited to the minimal required types. If you rely on XStream\u0027s default blacklist of the Security Framework, you will have to use at least version 1.4.16."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-400",
              "description": "CWE-400 Uncontrolled Resource Consumption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-502",
              "description": "CWE-502 Deserialization of Untrusted Data",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-02-07T14:41:20.000Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://x-stream.github.io/security.html#workaround"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "http://x-stream.github.io/changes.html#1.4.16"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/x-stream/xstream/security/advisories/GHSA-56p8-3fh9-4cvq"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://x-stream.github.io/CVE-2021-21348.html"
        },
        {
          "name": "[debian-lts-announce] 20210403 [SECURITY] [DLA 2616-1] libxstream-java security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2021/04/msg00002.html"
        },
        {
          "name": "[jmeter-dev] 20210406 [GitHub] [jmeter] sseide opened a new pull request #655: update x-stream to 1.4.16 (from 1.4.15)",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.apache.org/thread.html/r9ac71b047767205aa22e3a08cb33f3e0586de6b2fac48b425c6e16b0%40%3Cdev.jmeter.apache.org%3E"
        },
        {
          "name": "[activemq-users] 20210427 Release date for ActiveMQ v5.16.2 to fix CVEs",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.apache.org/thread.html/r8244fd0831db894d5e89911ded9c72196d395a90ae655414d23ed0dd%40%3Cusers.activemq.apache.org%3E"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://security.netapp.com/advisory/ntap-20210430-0002/"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.oracle.com//security-alerts/cpujul2021.html"
        },
        {
          "name": "FEDORA-2021-fbad11014a",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/22KVR6B5IZP3BGQ3HPWIO2FWWCKT3DHP/"
        },
        {
          "name": "FEDORA-2021-d894ca87dc",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QGXIU3YDPG6OGTDHMBLAFN7BPBERXREB/"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
        },
        {
          "name": "FEDORA-2021-5e376c0ed9",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PVPHZA7VW2RRSDCOIPP2W6O5ND254TU7/"
        },
        {
          "name": "DSA-5004",
          "tags": [
            "vendor-advisory",
            "x_refsource_DEBIAN"
          ],
          "url": "https://www.debian.org/security/2021/dsa-5004"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
        }
      ],
      "source": {
        "advisory": "GHSA-56p8-3fh9-4cvq",
        "discovery": "UNKNOWN"
      },
      "title": "XStream is vulnerable to an attack using Regular Expression for a Denial of Service (ReDos)",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2021-21348",
          "STATE": "PUBLIC",
          "TITLE": "XStream is vulnerable to an attack using Regular Expression for a Denial of Service (ReDos)"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "xstream",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "\u003c 1.4.16"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "x-stream"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is a vulnerability which may allow a remote attacker to occupy a thread that consumes maximum CPU time and will never return. No user is affected, who followed the recommendation to setup XStream\u0027s security framework with a whitelist limited to the minimal required types. If you rely on XStream\u0027s default blacklist of the Security Framework, you will have to use at least version 1.4.16."
            }
          ]
        },
        "impact": {
          "cvss": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-400 Uncontrolled Resource Consumption"
                }
              ]
            },
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-502 Deserialization of Untrusted Data"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://x-stream.github.io/security.html#workaround",
              "refsource": "MISC",
              "url": "https://x-stream.github.io/security.html#workaround"
            },
            {
              "name": "http://x-stream.github.io/changes.html#1.4.16",
              "refsource": "MISC",
              "url": "http://x-stream.github.io/changes.html#1.4.16"
            },
            {
              "name": "https://github.com/x-stream/xstream/security/advisories/GHSA-56p8-3fh9-4cvq",
              "refsource": "CONFIRM",
              "url": "https://github.com/x-stream/xstream/security/advisories/GHSA-56p8-3fh9-4cvq"
            },
            {
              "name": "https://x-stream.github.io/CVE-2021-21348.html",
              "refsource": "MISC",
              "url": "https://x-stream.github.io/CVE-2021-21348.html"
            },
            {
              "name": "[debian-lts-announce] 20210403 [SECURITY] [DLA 2616-1] libxstream-java security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2021/04/msg00002.html"
            },
            {
              "name": "[jmeter-dev] 20210406 [GitHub] [jmeter] sseide opened a new pull request #655: update x-stream to 1.4.16 (from 1.4.15)",
              "refsource": "MLIST",
              "url": "https://lists.apache.org/thread.html/r9ac71b047767205aa22e3a08cb33f3e0586de6b2fac48b425c6e16b0@%3Cdev.jmeter.apache.org%3E"
            },
            {
              "name": "[activemq-users] 20210427 Release date for ActiveMQ v5.16.2 to fix CVEs",
              "refsource": "MLIST",
              "url": "https://lists.apache.org/thread.html/r8244fd0831db894d5e89911ded9c72196d395a90ae655414d23ed0dd@%3Cusers.activemq.apache.org%3E"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20210430-0002/",
              "refsource": "CONFIRM",
              "url": "https://security.netapp.com/advisory/ntap-20210430-0002/"
            },
            {
              "name": "https://www.oracle.com//security-alerts/cpujul2021.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com//security-alerts/cpujul2021.html"
            },
            {
              "name": "FEDORA-2021-fbad11014a",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/22KVR6B5IZP3BGQ3HPWIO2FWWCKT3DHP/"
            },
            {
              "name": "FEDORA-2021-d894ca87dc",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QGXIU3YDPG6OGTDHMBLAFN7BPBERXREB/"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpuoct2021.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
            },
            {
              "name": "FEDORA-2021-5e376c0ed9",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PVPHZA7VW2RRSDCOIPP2W6O5ND254TU7/"
            },
            {
              "name": "DSA-5004",
              "refsource": "DEBIAN",
              "url": "https://www.debian.org/security/2021/dsa-5004"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpujan2022.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
            }
          ]
        },
        "source": {
          "advisory": "GHSA-56p8-3fh9-4cvq",
          "discovery": "UNKNOWN"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2021-21348",
    "datePublished": "2021-03-22T23:45:29.000Z",
    "dateReserved": "2020-12-22T00:00:00.000Z",
    "dateUpdated": "2026-10-07T18:45:09.131Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://x-stream.github.io/security.html#workaround\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}, {\"url\": \"http://x-stream.github.io/changes.html#1.4.16\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}, {\"url\": \"https://github.com/x-stream/xstream/security/advisories/GHSA-56p8-3fh9-4cvq\", \"tags\": [\"x_refsource_CONFIRM\", \"x_transferred\"]}, {\"url\": \"https://x-stream.github.io/CVE-2021-21348.html\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2021/04/msg00002.html\", \"name\": \"[debian-lts-announce] 20210403 [SECURITY] [DLA 2616-1] libxstream-java security update\", \"tags\": [\"mailing-list\", \"x_refsource_MLIST\", \"x_transferred\"]}, {\"url\": \"https://lists.apache.org/thread.html/r9ac71b047767205aa22e3a08cb33f3e0586de6b2fac48b425c6e16b0%40%3Cdev.jmeter.apache.org%3E\", \"name\": \"[jmeter-dev] 20210406 [GitHub] [jmeter] sseide opened a new pull request #655: update x-stream to 1.4.16 (from 1.4.15)\", \"tags\": [\"mailing-list\", \"x_refsource_MLIST\", \"x_transferred\"]}, {\"url\": \"https://lists.apache.org/thread.html/r8244fd0831db894d5e89911ded9c72196d395a90ae655414d23ed0dd%40%3Cusers.activemq.apache.org%3E\", \"name\": \"[activemq-users] 20210427 Release date for ActiveMQ v5.16.2 to fix CVEs\", \"tags\": [\"mailing-list\", \"x_refsource_MLIST\", \"x_transferred\"]}, {\"url\": \"https://security.netapp.com/advisory/ntap-20210430-0002/\", \"tags\": [\"x_refsource_CONFIRM\", \"x_transferred\"]}, {\"url\": \"https://www.oracle.com//security-alerts/cpujul2021.html\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/22KVR6B5IZP3BGQ3HPWIO2FWWCKT3DHP/\", \"name\": \"FEDORA-2021-fbad11014a\", \"tags\": [\"vendor-advisory\", \"x_refsource_FEDORA\", \"x_transferred\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QGXIU3YDPG6OGTDHMBLAFN7BPBERXREB/\", \"name\": \"FEDORA-2021-d894ca87dc\", \"tags\": [\"vendor-advisory\", \"x_refsource_FEDORA\", \"x_transferred\"]}, {\"url\": \"https://www.oracle.com/security-alerts/cpuoct2021.html\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PVPHZA7VW2RRSDCOIPP2W6O5ND254TU7/\", \"name\": \"FEDORA-2021-5e376c0ed9\", \"tags\": [\"vendor-advisory\", \"x_refsource_FEDORA\", \"x_transferred\"]}, {\"url\": \"https://www.debian.org/security/2021/dsa-5004\", \"name\": \"DSA-5004\", \"tags\": [\"vendor-advisory\", \"x_refsource_DEBIAN\", \"x_transferred\"]}, {\"url\": \"https://www.oracle.com/security-alerts/cpujan2022.html\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-03T18:09:15.691Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-21348\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-10-07T18:44:55.892035Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-10-07T18:45:02.242Z\"}}], \"cna\": {\"title\": \"XStream is vulnerable to an attack using Regular Expression for a Denial of Service (ReDos)\", \"source\": {\"advisory\": \"GHSA-56p8-3fh9-4cvq\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.3, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"REQUIRED\", \"attackComplexity\": \"HIGH\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}], \"affected\": [{\"vendor\": \"x-stream\", \"product\": \"xstream\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003c 1.4.16\"}]}], \"references\": [{\"url\": \"https://x-stream.github.io/security.html#workaround\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"http://x-stream.github.io/changes.html#1.4.16\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/x-stream/xstream/security/advisories/GHSA-56p8-3fh9-4cvq\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://x-stream.github.io/CVE-2021-21348.html\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2021/04/msg00002.html\", \"name\": \"[debian-lts-announce] 20210403 [SECURITY] [DLA 2616-1] libxstream-java security update\", \"tags\": [\"mailing-list\", \"x_refsource_MLIST\"]}, {\"url\": \"https://lists.apache.org/thread.html/r9ac71b047767205aa22e3a08cb33f3e0586de6b2fac48b425c6e16b0%40%3Cdev.jmeter.apache.org%3E\", \"name\": \"[jmeter-dev] 20210406 [GitHub] [jmeter] sseide opened a new pull request #655: update x-stream to 1.4.16 (from 1.4.15)\", \"tags\": [\"mailing-list\", \"x_refsource_MLIST\"]}, {\"url\": \"https://lists.apache.org/thread.html/r8244fd0831db894d5e89911ded9c72196d395a90ae655414d23ed0dd%40%3Cusers.activemq.apache.org%3E\", \"name\": \"[activemq-users] 20210427 Release date for ActiveMQ v5.16.2 to fix CVEs\", \"tags\": [\"mailing-list\", \"x_refsource_MLIST\"]}, {\"url\": \"https://security.netapp.com/advisory/ntap-20210430-0002/\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://www.oracle.com//security-alerts/cpujul2021.html\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/22KVR6B5IZP3BGQ3HPWIO2FWWCKT3DHP/\", \"name\": \"FEDORA-2021-fbad11014a\", \"tags\": [\"vendor-advisory\", \"x_refsource_FEDORA\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QGXIU3YDPG6OGTDHMBLAFN7BPBERXREB/\", \"name\": \"FEDORA-2021-d894ca87dc\", \"tags\": [\"vendor-advisory\", \"x_refsource_FEDORA\"]}, {\"url\": \"https://www.oracle.com/security-alerts/cpuoct2021.html\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PVPHZA7VW2RRSDCOIPP2W6O5ND254TU7/\", \"name\": \"FEDORA-2021-5e376c0ed9\", \"tags\": [\"vendor-advisory\", \"x_refsource_FEDORA\"]}, {\"url\": \"https://www.debian.org/security/2021/dsa-5004\", \"name\": \"DSA-5004\", \"tags\": [\"vendor-advisory\", \"x_refsource_DEBIAN\"]}, {\"url\": \"https://www.oracle.com/security-alerts/cpujan2022.html\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is a vulnerability which may allow a remote attacker to occupy a thread that consumes maximum CPU time and will never return. No user is affected, who followed the recommendation to setup XStream\u0027s security framework with a whitelist limited to the minimal required types. If you rely on XStream\u0027s default blacklist of the Security Framework, you will have to use at least version 1.4.16.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-400\", \"description\": \"CWE-400 Uncontrolled Resource Consumption\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-502\", \"description\": \"CWE-502 Deserialization of Untrusted Data\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2022-02-07T14:41:20.000Z\"}, \"x_legacyV4Record\": {\"impact\": {\"cvss\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.3, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"REQUIRED\", \"attackComplexity\": \"HIGH\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}, \"source\": {\"advisory\": \"GHSA-56p8-3fh9-4cvq\", \"discovery\": \"UNKNOWN\"}, \"affects\": {\"vendor\": {\"vendor_data\": [{\"product\": {\"product_data\": [{\"version\": {\"version_data\": [{\"version_value\": \"\u003c 1.4.16\"}]}, \"product_name\": \"xstream\"}]}, \"vendor_name\": \"x-stream\"}]}}, \"data_type\": \"CVE\", \"references\": {\"reference_data\": [{\"url\": \"https://x-stream.github.io/security.html#workaround\", \"name\": \"https://x-stream.github.io/security.html#workaround\", \"refsource\": \"MISC\"}, {\"url\": \"http://x-stream.github.io/changes.html#1.4.16\", \"name\": \"http://x-stream.github.io/changes.html#1.4.16\", \"refsource\": \"MISC\"}, {\"url\": \"https://github.com/x-stream/xstream/security/advisories/GHSA-56p8-3fh9-4cvq\", \"name\": \"https://github.com/x-stream/xstream/security/advisories/GHSA-56p8-3fh9-4cvq\", \"refsource\": \"CONFIRM\"}, {\"url\": \"https://x-stream.github.io/CVE-2021-21348.html\", \"name\": \"https://x-stream.github.io/CVE-2021-21348.html\", \"refsource\": \"MISC\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2021/04/msg00002.html\", \"name\": \"[debian-lts-announce] 20210403 [SECURITY] [DLA 2616-1] libxstream-java security update\", \"refsource\": \"MLIST\"}, {\"url\": \"https://lists.apache.org/thread.html/r9ac71b047767205aa22e3a08cb33f3e0586de6b2fac48b425c6e16b0@%3Cdev.jmeter.apache.org%3E\", \"name\": \"[jmeter-dev] 20210406 [GitHub] [jmeter] sseide opened a new pull request #655: update x-stream to 1.4.16 (from 1.4.15)\", \"refsource\": \"MLIST\"}, {\"url\": \"https://lists.apache.org/thread.html/r8244fd0831db894d5e89911ded9c72196d395a90ae655414d23ed0dd@%3Cusers.activemq.apache.org%3E\", \"name\": \"[activemq-users] 20210427 Release date for ActiveMQ v5.16.2 to fix CVEs\", \"refsource\": \"MLIST\"}, {\"url\": \"https://security.netapp.com/advisory/ntap-20210430-0002/\", \"name\": \"https://security.netapp.com/advisory/ntap-20210430-0002/\", \"refsource\": \"CONFIRM\"}, {\"url\": \"https://www.oracle.com//security-alerts/cpujul2021.html\", \"name\": \"https://www.oracle.com//security-alerts/cpujul2021.html\", \"refsource\": \"MISC\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/22KVR6B5IZP3BGQ3HPWIO2FWWCKT3DHP/\", \"name\": \"FEDORA-2021-fbad11014a\", \"refsource\": \"FEDORA\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QGXIU3YDPG6OGTDHMBLAFN7BPBERXREB/\", \"name\": \"FEDORA-2021-d894ca87dc\", \"refsource\": \"FEDORA\"}, {\"url\": \"https://www.oracle.com/security-alerts/cpuoct2021.html\", \"name\": \"https://www.oracle.com/security-alerts/cpuoct2021.html\", \"refsource\": \"MISC\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PVPHZA7VW2RRSDCOIPP2W6O5ND254TU7/\", \"name\": \"FEDORA-2021-5e376c0ed9\", \"refsource\": \"FEDORA\"}, {\"url\": \"https://www.debian.org/security/2021/dsa-5004\", \"name\": \"DSA-5004\", \"refsource\": \"DEBIAN\"}, {\"url\": \"https://www.oracle.com/security-alerts/cpujan2022.html\", \"name\": \"https://www.oracle.com/security-alerts/cpujan2022.html\", \"refsource\": \"MISC\"}]}, \"data_format\": \"MITRE\", \"description\": {\"description_data\": [{\"lang\": \"eng\", \"value\": \"XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is a vulnerability which may allow a remote attacker to occupy a thread that consumes maximum CPU time and will never return. No user is affected, who followed the recommendation to setup XStream\u0027s security framework with a whitelist limited to the minimal required types. If you rely on XStream\u0027s default blacklist of the Security Framework, you will have to use at least version 1.4.16.\"}]}, \"problemtype\": {\"problemtype_data\": [{\"description\": [{\"lang\": \"eng\", \"value\": \"CWE-400 Uncontrolled Resource Consumption\"}]}, {\"description\": [{\"lang\": \"eng\", \"value\": \"CWE-502 Deserialization of Untrusted Data\"}]}]}, \"data_version\": \"4.0\", \"CVE_data_meta\": {\"ID\": \"CVE-2021-21348\", \"STATE\": \"PUBLIC\", \"TITLE\": \"XStream is vulnerable to an attack using Regular Expression for a Denial of Service (ReDos)\", \"ASSIGNER\": \"security-advisories@github.com\"}}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-21348\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-10-07T18:45:09.131Z\", \"dateReserved\": \"2020-12-22T00:00:00.000Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2021-03-22T23:45:29.000Z\", \"assignerShortName\": \"GitHub_M\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.