CVE-2026-18252
Inclusion of Functionality from Untrusted Control Sphere in GitLab
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.
INFO
Published Date :
Aug. 26, 2026, 1:36 p.m.
Last Modified :
Aug. 26, 2026, 1:36 p.m.
Remotely Exploit :
Yes !
Source :
GitLab
Affected Products
The following products are affected by CVE-2026-18252
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | ceab7361-8a18-47b1-92ba-4d7d25f6715a |
Solution
- Update GitLab to versions 19.1.7, 19.2.5, or 19.3.1 or later.
- Review and sanitize Claude agent configuration sources.
- Limit developer role permissions for CI contexts.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-18252 vulnerability anywhere in the article.