Input validation error in GitLab Enterprise Edition and Gitlab Community Edition - CVE-2026-12436

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Main Vulnerability Database Vulnerabilities #VU140476

Input validation error in GitLab Enterprise Edition and Gitlab Community Edition - CVE-2026-12436

Published: July 29, 2026 / Updated: July 30, 2026


Vulnerability identifier: #VU140476
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-12436
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available
Affected software:
GitLab Enterprise Edition
Gitlab Community Edition

Detailed vulnerability description

The vulnerability allows a remote user to modify CI/CD configuration belonging to another user.

The vulnerability exists due to improper input validation in the Pipeline Schedule API when processing pipeline schedule inputs. A remote user can supply crafted attributes to modify CI/CD configuration belonging to another user.


How to mitigate CVE-2026-12436

Install security update from vendor's website.

Sources