UpHeron
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Servers and applications

CVE-2026-18252

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.

Severity
High 8.1
Published
26 Aug 2026
Last changed
31 Aug 2026
Added to UpHeron
21 Oct 2026
Fixed in
19.1.7, 19.2.5
Sources
NVD

Affected software

SoftwareAffected versions
GitLabServers and applications · cpe:a:gitlab:gitlab
  • From 18.9.0 before 19.1.7
  • From 19.2.0 before 19.2.5
  • Version 19.3.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-18252
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-18252