CVE-2026-63021 (GCVE-0-2026-63021)
Vulnerability from cvelistv5
Published
2026-10-14 14:28
Modified
2026-10-14 15:20
Summary
Gitea's Swift package parser limits each manifest to 128 KiB but does not limit the number of manifests or their aggregate size before reading them into memory. An authenticated user with package-publish permission can upload a highly compressed archive containing many manifests, causing allocations far larger than the uploaded archive. This can exhaust memory, terminate the process, or cause request failures.
Impacted products
Vendor Product Version
Gitea Gitea Version: 0   ≤ 1.27.2
Create a notification for this product.
Show details on NVD website


{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 6.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-63021",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-14T15:19:39.273675Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-400",
                "description": "CWE-400 Uncontrolled Resource Consumption",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-14T15:20:14.313Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageName": "gitea",
          "product": "Gitea",
          "vendor": "Gitea",
          "versions": [
            {
              "lessThanOrEqual": "1.27.2",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "https://github.com/DshtAnger"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "https://github.com/bircni"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Gitea\u0027s Swift package parser limits each manifest to 128 KiB but does not limit the number of manifests or their aggregate size before reading them into memory. An authenticated user with package-publish permission can upload a highly compressed archive containing many manifests, causing allocations far larger than the uploaded archive. This can exhaust memory, terminate the process, or cause request failures."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-14T14:28:56.909Z",
        "orgId": "88ee5874-cf24-4952-aea0-31affedb7ff2",
        "shortName": "Gitea"
      },
      "references": [
        {
          "name": "GitHub Security Advisory GHSA-fqxf-w92m-prvq",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://github.com/go-gitea/gitea/security/advisories/GHSA-fqxf-w92m-prvq"
        },
        {
          "name": "Gitea 1.27.3 release announcement",
          "tags": [
            "release-notes"
          ],
          "url": "https://blog.gitea.com/release-of-1.27.3/"
        },
        {
          "name": "Fix: go-gitea/gitea pull request #39025",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/go-gitea/gitea/pull/39025"
        },
        {
          "name": "Fix: go-gitea/gitea pull request #39032",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/go-gitea/gitea/pull/39032"
        },
        {
          "name": "go-gitea/gitea v1.27.3 release",
          "tags": [
            "release-notes"
          ],
          "url": "https://github.com/go-gitea/gitea/releases/tag/v1.27.3"
        }
      ],
      "title": "Gitea Swift package manifest memory exhaustion"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "88ee5874-cf24-4952-aea0-31affedb7ff2",
    "assignerShortName": "Gitea",
    "cveId": "CVE-2026-63021",
    "datePublished": "2026-10-14T14:28:56.909Z",
    "dateReserved": "2026-08-13T16:50:59.165Z",
    "dateUpdated": "2026-10-14T15:20:14.313Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 6.5, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-63021\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-10-14T15:19:39.273675Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-400\", \"description\": \"CWE-400 Uncontrolled Resource Consumption\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-10-14T15:20:09.802Z\"}}], \"cna\": {\"title\": \"Gitea Swift package manifest memory exhaustion\", \"credits\": [{\"lang\": \"en\", \"type\": \"reporter\", \"value\": \"https://github.com/DshtAnger\"}, {\"lang\": \"en\", \"type\": \"remediation developer\", \"value\": \"https://github.com/bircni\"}], \"affected\": [{\"vendor\": \"Gitea\", \"product\": \"Gitea\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"1.27.2\"}], \"packageName\": \"gitea\", \"defaultStatus\": \"unaffected\"}], \"references\": [{\"url\": \"https://github.com/go-gitea/gitea/security/advisories/GHSA-fqxf-w92m-prvq\", \"name\": \"GitHub Security Advisory GHSA-fqxf-w92m-prvq\", \"tags\": [\"vendor-advisory\"]}, {\"url\": \"https://blog.gitea.com/release-of-1.27.3/\", \"name\": \"Gitea 1.27.3 release announcement\", \"tags\": [\"release-notes\"]}, {\"url\": \"https://github.com/go-gitea/gitea/pull/39025\", \"name\": \"Fix: go-gitea/gitea pull request #39025\", \"tags\": [\"patch\"]}, {\"url\": \"https://github.com/go-gitea/gitea/pull/39032\", \"name\": \"Fix: go-gitea/gitea pull request #39032\", \"tags\": [\"patch\"]}, {\"url\": \"https://github.com/go-gitea/gitea/releases/tag/v1.27.3\", \"name\": \"go-gitea/gitea v1.27.3 release\", \"tags\": [\"release-notes\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Gitea\u0027s Swift package parser limits each manifest to 128 KiB but does not limit the number of manifests or their aggregate size before reading them into memory. An authenticated user with package-publish permission can upload a highly compressed archive containing many manifests, causing allocations far larger than the uploaded archive. This can exhaust memory, terminate the process, or cause request failures.\"}], \"providerMetadata\": {\"orgId\": \"88ee5874-cf24-4952-aea0-31affedb7ff2\", \"shortName\": \"Gitea\", \"dateUpdated\": \"2026-10-14T14:28:56.909Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-63021\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-10-14T15:20:14.313Z\", \"dateReserved\": \"2026-08-13T16:50:59.165Z\", \"assignerOrgId\": \"88ee5874-cf24-4952-aea0-31affedb7ff2\", \"datePublished\": \"2026-10-14T14:28:56.909Z\", \"assignerShortName\": \"Gitea\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

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.


Loading…

Loading…