CVE-2026-112887

Full vulnerability record from the local CVENow database.

Description

Gitea Actions task tokens authenticate to the REST API as a shared system user with a negative ID, which repository, organization, project and key filters treated as having no owner restriction, and the token carried no API scope to restrict user-scoped routes. A user who can run a workflow could use the job's token with `GET /api/v1/user/repos` to list every repository on the instance, including private repositories of other users and organizations, with their metadata. Repository contents remained protected by per-repository permission checks. System users now own nothing, and `/api/v1/user` routes other than `GET /api/v1/user` accept only individual and bot accounts.

Severity

Not scored

CVSS score

Not available

Vulnerability status

Deferred

Source identifier

88ee5874-cf24-4952-aea0-31affedb7ff2

Published

2026-11-01 10:18:33.457000

Last modified

2026-11-01 10:18:34.510000

View original CVE JSON

{
  "id": "CVE-2026-112887",
  "sourceIdentifier": "88ee5874-cf24-4952-aea0-31affedb7ff2",
  "published": "2026-11-01T10:18:33.457",
  "lastModified": "2026-11-01T10:18:34.510",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Gitea Actions task tokens authenticate to the REST API as a shared system user with a negative ID, which repository, organization, project and key filters treated as having no owner restriction, and the token carried no API scope to restrict user-scoped routes. A user who can run a workflow could use the job's token with `GET /api/v1/user/repos` to list every repository on the instance, including private repositories of other users and organizations, with their metadata. Repository contents remained protected by per-repository permission checks. System users now own nothing, and `/api/v1/user` routes other than `GET /api/v1/user` accept only individual and bot accounts."
    }
  ],
  "affected": [
    {
      "source": "88ee5874-cf24-4952-aea0-31affedb7ff2",
      "affectedData": [
        {
          "vendor": "Gitea",
          "product": "Gitea",
          "defaultStatus": "unaffected",
          "packageName": "gitea.dev",
          "versions": [
            {
              "version": "0",
              "lessThan": "28.3.0",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {},
  "weaknesses": [
    {
      "source": "88ee5874-cf24-4952-aea0-31affedb7ff2",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        },
        {
          "lang": "en",
          "value": "CWE-862"
        }
      ]
    }
  ],
  "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/39945",
      "source": "88ee5874-cf24-4952-aea0-31affedb7ff2"
    },
    {
      "url": "https://github.com/go-gitea/gitea/pull/40115",
      "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-8r36-6j2c-3gmv",
      "source": "88ee5874-cf24-4952-aea0-31affedb7ff2"
    }
  ]
}