{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageName": "gitea.dev",
          "product": "Gitea",
          "vendor": "Gitea",
          "versions": [
            {
              "lessThan": "28.3.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "https://github.com/yagcioglutoprak"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "https://github.com/basavaraj-sm05"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Legacy (v1 to v3) Actions artifact uploads stored the request\u0027s `Content-Encoding` header unchecked in the column that is served as the artifact\u0027s `Content-Type` on download, and a value starting with `video/` or `audio/` also removed the sandboxing Content-Security-Policy. A user who can run an Actions job could upload an artifact that a browser renders as HTML on the Gitea origin when the direct artifact download URL is opened, and the URL is reachable anonymously on public repositories. A victim who opens the link runs the attacker\u0027s script with their own session, which for an administrator means control of the instance. Legacy uploads now store only the `gzip` marker, and the special serve headers are chosen only for valid media types."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-11-01T09:48:32.206Z",
        "orgId": "88ee5874-cf24-4952-aea0-31affedb7ff2",
        "shortName": "Gitea"
      },
      "references": [
        {
          "name": "GitHub Security Advisory GHSA-9v6p-xpcp-7488",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://github.com/go-gitea/gitea/security/advisories/GHSA-9v6p-xpcp-7488"
        },
        {
          "name": "Fix: go-gitea/gitea pull request #39855",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/go-gitea/gitea/pull/39855"
        },
        {
          "name": "Fix backport to release/v28: go-gitea/gitea pull request #39996",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/go-gitea/gitea/pull/39996"
        },
        {
          "name": "Gitea 28.3.0 release announcement",
          "tags": [
            "release-notes"
          ],
          "url": "https://blog.gitea.com/release-of-28.3.0/"
        },
        {
          "name": "go-gitea/gitea v28.3.0 release",
          "tags": [
            "release-notes"
          ],
          "url": "https://github.com/go-gitea/gitea/releases/tag/v28.3.0"
        }
      ],
      "title": "Gitea stored XSS through legacy Actions artifact Content-Encoding"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "88ee5874-cf24-4952-aea0-31affedb7ff2",
    "assignerShortName": "Gitea",
    "cveId": "CVE-2026-113429",
    "datePublished": "2026-11-01T09:48:32.206Z",
    "dateReserved": "2026-11-01T08:48:41.162Z",
    "dateUpdated": "2026-11-01T09:48:32.206Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}