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CVE-2026-18252

8.1, high

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…

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
8.1, high high CVSS v3.1
EPSS, next 30 days
0.4% higher than 34.6% of scored CVEs
Exploitation
No public evidence
Published
26 Aug 2026a month ago

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.

Details

Vendor
GitLab
Product
GitLab
Weakness
CWE-829 (opens in a new tab)
Status
Analyzed
Updated
31 Aug 2026
Assigner
cve@gitlab.com

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

References 3

Patches and fixes 1

Advisories 1

Other references 1

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other GitLab CVEs

Every GitLab CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-85706 GitLab Community Edition and Enterprise Edition Path Traversal Vulnerability KEV EPSS 93% 10, critical
  • CVE-2023-7028 GitLab Community and Enterprise Editions Improper Access Control Vulnerability KEV EPSS 95% 9.8, critical
  • CVE-2021-39935 GitLab Community and Enterprise Editions Server-Side Request Forgery (SSRF) Vulnerability KEV EPSS 36% 7.5, high
  • CVE-2021-22175 GitLab Server-Side Request Forgery (SSRF) Vulnerability KEV EPSS 53% 9.8, critical
  • CVE-2021-22205 GitLab Community and Enterprise Editions Remote Code Execution Vulnerability KEV EPSS 100% 10, critical
  • CVE-2026-75871 GitLab AI Gateway Server-Side Request Forgery Vulnerability EPSS 0.3% 9.6, critical

Beyond this page

Is CVE-2026-18252 in your network?

This page tells you how dangerous CVE-2026-18252 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.