Input validation error in Gitlab Community Edition and GitLab Enterprise Edition - CVE-2026-1659

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Main Vulnerability Database Vulnerabilities #VU131669

Input validation error in Gitlab Community Edition and GitLab Enterprise Edition - CVE-2026-1659

Published: May 18, 2026


Vulnerability identifier: #VU131669
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-1659
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: GitLab, Inc
Affected software:
Gitlab Community Edition
GitLab Enterprise Edition

Detailed vulnerability description

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to insufficient input validation in CI/CD job update API when handling specially crafted requests. A remote attacker can send specially crafted requests to cause a denial of service.


How to mitigate CVE-2026-1659

Install security update from vendor's website.

Sources