{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "1.27.3"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "15b8a5805adf57c5189602008d38cccfd3c795e0"
            }
          ],
          "repo": "https://github.com/go-gitea/gitea",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-93pj-3x56-5gc2"
  ],
  "database_specific": {
    "cna_assigner": "Gitea",
    "cwe_ids": [
      "CWE-841"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/104xxx/CVE-2026-104626.json"
  },
  "details": "A user who can open a fork pull request can place workflow content with a shared run-level concurrency group into a Gitea Actions run that is awaiting approval. When a later run in that group cancels the blocked job, the run becomes terminal while still marked as needing approval. If a maintainer later approves the run, Gitea passed the already-cancelled job back through concurrency preparation, set it to waiting, and made it claimable by a matching runner, executing fork-controlled workflow code. Exploitation requires the maintainer's later approval action, Actions to be enabled, and a runner that accepts the repository's jobs.",
  "id": "CVE-2026-104626",
  "modified": "2026-10-08T02:30:41.871265854Z",
  "published": "2026-10-06T19:23:03.330Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://blog.gitea.com/release-of-28.0.0/"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/104xxx/CVE-2026-104626.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/go-gitea/gitea/releases/tag/v28.0.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/go-gitea/gitea/security/advisories/GHSA-93pj-3x56-5gc2"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-104626"
    },
    {
      "type": "FIX",
      "url": "https://github.com/go-gitea/gitea/pull/39399"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "Gitea fork workflow job revival through later approval"
}