CVE-2026-44845 (GCVE-0-2026-44845)
Vulnerability from cvelistv5
Published
2026-08-17 21:03
Modified
2026-08-18 18:37
Severity ?
6.7 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:H
CWE
  • CWE-1336 - Improper Neutralization of Special Elements Used in a Template Engine
Summary
JumpServer is an open source bastion host and an operation and maintenance security audit system. Prior to 4.10.17, an authenticated administrator with Applet Host management and deployment permissions can inject Jinja2 expressions into the IP/Host field or Core Service Address field, causing Ansible to evaluate ansible_host inventory data or playbook variables during Applet Host deployment and execute arbitrary commands on the JumpServer control node. This issue is fixed in version 4.10.17.
References
Impacted products
Vendor Product Version
jumpserver jumpserver Version: < 4.10.17
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-44845",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-18T18:37:17.224658Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-18T18:37:24.255Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/jumpserver/jumpserver/security/advisories/GHSA-22h6-pcgh-9v7q"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "jumpserver",
          "vendor": "jumpserver",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 4.10.17"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "JumpServer is an open source bastion host and an operation and maintenance security audit system. Prior to 4.10.17, an authenticated administrator with Applet Host management and deployment permissions can inject Jinja2 expressions into the IP/Host field or Core Service Address field, causing Ansible to evaluate ansible_host inventory data or playbook variables during Applet Host deployment and execute arbitrary commands on the JumpServer control node. This issue is fixed in version 4.10.17."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.7,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "LOW",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-1336",
              "description": "CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T21:03:08.891Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/jumpserver/jumpserver/security/advisories/GHSA-22h6-pcgh-9v7q",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/jumpserver/jumpserver/security/advisories/GHSA-22h6-pcgh-9v7q"
        },
        {
          "name": "https://github.com/jumpserver/jumpserver/pull/16749",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/jumpserver/jumpserver/pull/16749"
        },
        {
          "name": "https://github.com/jumpserver/jumpserver/pull/16886",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/jumpserver/jumpserver/pull/16886"
        },
        {
          "name": "https://github.com/jumpserver/jumpserver/commit/cc57ba0de5f6015746fae11cfc62402b11618e59",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/jumpserver/jumpserver/commit/cc57ba0de5f6015746fae11cfc62402b11618e59"
        },
        {
          "name": "https://github.com/jumpserver/jumpserver/releases/tag/v4.10.17",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/jumpserver/jumpserver/releases/tag/v4.10.17"
        }
      ],
      "source": {
        "advisory": "GHSA-22h6-pcgh-9v7q",
        "discovery": "UNKNOWN"
      },
      "title": "JumpServer: Remote Command Execution (RCE) via Jinja Template Injection in Applet Host Deployment"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-44845",
    "datePublished": "2026-08-17T21:03:08.891Z",
    "dateReserved": "2026-05-07T21:21:48.353Z",
    "dateUpdated": "2026-08-18T18:37:24.255Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-44845\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"poc\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-08-18T18:37:17.224658Z\"}}}], \"references\": [{\"url\": \"https://github.com/jumpserver/jumpserver/security/advisories/GHSA-22h6-pcgh-9v7q\", \"tags\": [\"exploit\"]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-08-18T18:33:34.447Z\"}}], \"cna\": {\"title\": \"JumpServer: Remote Command Execution (RCE) via Jinja Template Injection in Applet Host Deployment\", \"source\": {\"advisory\": \"GHSA-22h6-pcgh-9v7q\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 6.7, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:H\", \"integrityImpact\": \"LOW\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"HIGH\", \"confidentialityImpact\": \"HIGH\"}}], \"affected\": [{\"vendor\": \"jumpserver\", \"product\": \"jumpserver\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003c 4.10.17\"}]}], \"references\": [{\"url\": \"https://github.com/jumpserver/jumpserver/security/advisories/GHSA-22h6-pcgh-9v7q\", \"name\": \"https://github.com/jumpserver/jumpserver/security/advisories/GHSA-22h6-pcgh-9v7q\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/jumpserver/jumpserver/pull/16749\", \"name\": \"https://github.com/jumpserver/jumpserver/pull/16749\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/jumpserver/jumpserver/pull/16886\", \"name\": \"https://github.com/jumpserver/jumpserver/pull/16886\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/jumpserver/jumpserver/commit/cc57ba0de5f6015746fae11cfc62402b11618e59\", \"name\": \"https://github.com/jumpserver/jumpserver/commit/cc57ba0de5f6015746fae11cfc62402b11618e59\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/jumpserver/jumpserver/releases/tag/v4.10.17\", \"name\": \"https://github.com/jumpserver/jumpserver/releases/tag/v4.10.17\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"JumpServer is an open source bastion host and an operation and maintenance security audit system. Prior to 4.10.17, an authenticated administrator with Applet Host management and deployment permissions can inject Jinja2 expressions into the IP/Host field or Core Service Address field, causing Ansible to evaluate ansible_host inventory data or playbook variables during Applet Host deployment and execute arbitrary commands on the JumpServer control node. This issue is fixed in version 4.10.17.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-1336\", \"description\": \"CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2026-08-17T21:03:08.891Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-44845\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-18T18:37:24.255Z\", \"dateReserved\": \"2026-05-07T21:21:48.353Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2026-08-17T21:03:08.891Z\", \"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.