HIGH

CVE-2026-18252

Gitlab GitLab 2026-08-26 CVSS v3.1

CVSS

8.1

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.

Weakness (CWE)

CWE-829

EPSS Score

0.42%

Probability of exploitation in next 30 days

35.7th percentile

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

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Base CVE data derived from NVD (public domain). Enrichment by dbcve.org (CC-BY-4.0). Fetched via API.

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