Input validation error in Gitlab Community Edition and GitLab Enterprise Edition - CVE-2026-1660

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Main Vulnerability Database Vulnerabilities #VU131656

Input validation error in Gitlab Community Edition and GitLab Enterprise Edition - CVE-2026-1660

Published: May 18, 2026


Vulnerability identifier: #VU131656
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-1660
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

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

The vulnerability exists due to improper input validation in Jira import when importing issues. A remote user can submit crafted import data to cause a denial of service.


Affected software

Gitlab Community Edition
GitLab Enterprise Edition

How to mitigate CVE-2026-1660

Install security update from vendor's website.

Gitlab Community Edition - addressed in versions 18.9.6, 18.10.4, 18.11.1
GitLab Enterprise Edition - addressed in versions 18.9.6, 18.10.4, 18.11.1

External References

Related Security Bulletins