## rucio has an Authorization Bypass on REST API endpoint for signing URLs

- 種別: advisory
- 重大度: high
- 関連技術: python, swift
- CVE: CVE-2026-58273
- 公開日時: 2026-10-28T19:50:05.000Z
- 情報源: GitHub Advisory Database (https://github.com/advisories/GHSA-5j9r-fx4x-rpvg)
- パーマリンク: https://vulnpulse.app/items/ghsa-ghsa-5j9r-fx4x-rpvg

影響: pip:rucio >= 1.16.1, < 35.9.0 → 35.9.0, pip:rucio >= 36.0.0rc1, < 38.6.0 → 38.6.0, pip:rucio >= 39.0.0rc1, < 41.0.0rc1 → 41.0.0rc1
The /credentials/signurl endpoint decides authorization from the client-supplied X-Rucio-Account HTTP header instead of the authenticated token's account. Any client holding any valid auth token (even a low-privilege account they legitimately own) can send X-Rucio-Account: root to pass the root-only permission check and have the Rucio server mint a presigned read / write / delete URL for an arbitrary object, signed with the RSE's stored S3 / GCS / Swift credentials. Details SignURL.get() takes…