CVE-2026-3988

HIGH

Inefficient Algorithmic Complexity in GitLab

Title source: cna
STIX 2.1

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.

Scores

CVSS v3 7.5
EPSS 0.0006
EPSS Percentile 18.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-407
Status published
Products (5)
gitlab/gitlab 18.10.0 (2 CPE variants)
GitLab/GitLab 18.10 - 18.10.1
GitLab/GitLab 18.5 - 18.8.7
gitlab/gitlab 18.5.0 - 18.8.7 (2 CPE variants)
GitLab/GitLab 18.9 - 18.9.3
Published Mar 25, 2026
Tracked Since Mar 25, 2026