CVE-2026-118386

Full vulnerability record from the local CVENow database.

Description

Workflows triggered by a pull request review were read from the commit named in the review's `commit_id`, while the fork restrictions were decided by the reviewed pull request, and the commit was not checked to belong to that pull request. A user with read access to a repository could place a commit of their own in it, through a fork pull request or an AGit push, and submit a review naming that commit on a pull request whose head branch is in the same repository. On instances with a runner serving the repository, the attacker's workflow then ran without approval, received the Actions secrets of the repository and its owner, and got a `GITEA_TOKEN` with write access to the repository. Review-triggered workflows now run on the pull request head.

Severity

Not scored

CVSS score

Not available

Vulnerability status

Deferred

Source identifier

88ee5874-cf24-4952-aea0-31affedb7ff2

Published

2026-11-01 10:18:36.073000

Last modified

2026-11-01 10:18:36.187000

View original CVE JSON

{
  "id": "CVE-2026-118386",
  "sourceIdentifier": "88ee5874-cf24-4952-aea0-31affedb7ff2",
  "published": "2026-11-01T10:18:36.073",
  "lastModified": "2026-11-01T10:18:36.187",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Workflows triggered by a pull request review were read from the commit named in the review's `commit_id`, while the fork restrictions were decided by the reviewed pull request, and the commit was not checked to belong to that pull request. A user with read access to a repository could place a commit of their own in it, through a fork pull request or an AGit push, and submit a review naming that commit on a pull request whose head branch is in the same repository. On instances with a runner serving the repository, the attacker's workflow then ran without approval, received the Actions secrets of the repository and its owner, and got a `GITEA_TOKEN` with write access to the repository. Review-triggered workflows now run on the pull request head."
    }
  ],
  "affected": [
    {
      "source": "88ee5874-cf24-4952-aea0-31affedb7ff2",
      "affectedData": [
        {
          "vendor": "Gitea",
          "product": "Gitea",
          "defaultStatus": "unaffected",
          "packageName": "gitea.dev",
          "versions": [
            {
              "version": "1.19.0",
              "lessThan": "28.3.0",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {},
  "weaknesses": [
    {
      "source": "88ee5874-cf24-4952-aea0-31affedb7ff2",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://blog.gitea.com/release-of-28.3.0/",
      "source": "88ee5874-cf24-4952-aea0-31affedb7ff2"
    },
    {
      "url": "https://github.com/go-gitea/gitea/pull/40099",
      "source": "88ee5874-cf24-4952-aea0-31affedb7ff2"
    },
    {
      "url": "https://github.com/go-gitea/gitea/pull/40117",
      "source": "88ee5874-cf24-4952-aea0-31affedb7ff2"
    },
    {
      "url": "https://github.com/go-gitea/gitea/releases/tag/v28.3.0",
      "source": "88ee5874-cf24-4952-aea0-31affedb7ff2"
    },
    {
      "url": "https://github.com/go-gitea/gitea/security/advisories/GHSA-32h8-5xqg-h466",
      "source": "88ee5874-cf24-4952-aea0-31affedb7ff2"
    }
  ]
}