CVEvulnerability
CVE-2026-18252
8.1 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2026-08-26
- Last modified
- 2026-08-31
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.3 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
- CVSS 3.1 ([email protected])
- 8.1 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- Weaknesses
- CWE-829
Description
GitLab has remediated an issue in GitLab EE affecting all versions from 18.9 before 19.1.7, 19.2 before 19.2.5, and 19.3 before 19.3.1 that, under certain conditions, an authenticated user with developer-role permissions could have executed arbitrary commands in a CI context, due to the Claude agent processing configuration from a user-controlled source.
Affected configurations
• gitlab gitlab (>= 18.9.0 < 19.1.7)
• gitlab gitlab (>= 19.2.0 < 19.2.5)
• gitlab gitlab 19.3.0
Related
Weakness · CWE (1)
- CWE-829 Inclusion of Functionality from Untrusted Control Sphere weakness
References
- https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-3-1-released/ Release Notes, Vendor Advisory
- https://gitlab.com/gitlab-org/gitlab/-/work_items/607342 Issue Tracking
- https://hackerone.com/reports/3863650 Permissions Required, Third Party Advisory