# CVE-2026-18252: Inclusion of Functionality from Untrusted Control Sphere in GitLab

> CVE-2026-18252: Inclusion of Functionality from Untrusted Control Sphere in GitLab. CVSS 7.3 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-18252
Last updated: 2026-08-31T15:42:04Z

- Published: 2026-08-26 13:36 UTC · Updated: 2026-08-31 15:42 UTC · Assigner: GitLab
- CVSS: 7.3 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
- EPSS: 0.52%, 44th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: 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 vendors and products

- GitLab: GitLab

## Tracked companies

- [GitLab](https://rewindex.com/company/gitlab.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-18252)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-18252)
- [https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-3-1-released/](https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-3-1-released/)
- [https://gitlab.com/gitlab-org/gitlab/-/work\_items/607342](https://gitlab.com/gitlab-org/gitlab/-/work_items/607342)
- [https://hackerone.com/reports/3863650](https://hackerone.com/reports/3863650)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-18252 · Markdown: https://rewindex.com/cve/CVE-2026-18252.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-18252 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:10:43.422Z