#VU124601 Improper input validation in Gitlab Community Edition and GitLab Enterprise Edition - CVE-2026-3988

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Main Vulnerability Database Vulnerabilities #VU124601

#VU124601 Improper input validation in Gitlab Community Edition and GitLab Enterprise Edition - CVE-2026-3988

Published: March 25, 2026 / Updated: March 25, 2026


Vulnerability identifier: #VU124601
Vulnerability risk: Medium
CVSSv4.0: 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-2026-3988
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Gitlab Community Edition
GitLab Enterprise Edition
Software vendor:
GitLab, Inc

Description

The vulnerability allows a remote attacker to cause a denial of service by making the GitLab instance unresponsive.

The vulnerability exists due to improper input validation in the GraphQL API when handling requests. A remote attacker can send a specially crafted GraphQL request to trigger excessive resource consumption and cause a denial of service.


Remediation

Install security update from vendor's website.

External links