CVE-2026-3988

Published: Mar 25, 2026Modified: Jun 17, 2026

7.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability: 3.9 / Impact: 3.6

Source: cve@gitlab.com (Secondary)

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.5 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an unauthenticated user to cause a denial of service by making the GitLab instance unresponsive due to improper input validation in GraphQL request processing.

Affected (6)

Products: Gitlab: Gitlab

Gitlab

1 product

Gitlab

Configuration A

6 vulnerable

Vulnerable Software	Affected Versions
Gitlab Gitlab	From 18.5.0 to 18.8.7
Gitlab Gitlab	From 18.9.0 to 18.9.3
Gitlab Gitlab	From 18.5.0 to 18.8.7
Gitlab Gitlab	From 18.9.0 to 18.9.3
Gitlab Gitlab	Version 18.10.0
Gitlab Gitlab	Version 18.10.0

Related CWEs

CWE-407

Inefficient Algorithmic Complexity

An algorithm in a product has an inefficient worst-case computational complexity that may be detrimental to system performance and can be triggered by an attacker, typically using crafted manipulations that ensure that the worst case is being reached.

References (3)

https://about.gitlab.com/releases/2026/03/25/patch-release-gitlab-18-10-1-released/

Source: cve@gitlab.com

Release NotesVendor Advisory

https://gitlab.com/gitlab-org/gitlab/-/work_items/593140

Source: cve@gitlab.com

Broken Link

https://hackerone.com/reports/3597342

Source: cve@gitlab.com

Permissions Required

Timeline

No history available yet.