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.

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Advisories

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Fixes

Solution

Upgrade to versions 19.1.7, 19.2.5, 19.3.1 or above.


Workaround

No workaround given by the vendor.

History

Wed, 26 Aug 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 26 Aug 2026 13:45:00 +0000

Type Values Removed Values Added
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.
Title Inclusion of Functionality from Untrusted Control Sphere in GitLab
First Time appeared Gitlab
Gitlab gitlab
Weaknesses CWE-829
CPEs cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
Vendors & Products Gitlab
Gitlab gitlab
References
Metrics cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitLab

Published:

Updated: 2026-08-26T15:39:35.785Z

Reserved: 2026-07-29T15:34:54.723Z

Link: CVE-2026-18252

cve-icon Vulnrichment

Updated: 2026-08-26T15:39:31.927Z

cve-icon NVD

Status : Received

Published: 2026-08-26T14:17:08.000

Modified: 2026-08-26T16:16:25.397

Link: CVE-2026-18252

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-26T14:45:04Z

Weaknesses