CVE-2025-12562

HIGH

GitLab 11.10-18.4.5, 18.5-18.5.3, 18.6-18.6.1 - Unauthenticated Denial of Service via GraphQL Query Complexity Bypass

Title source: llm
STIX 2.1

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 11.10 before 18.4.6, 18.5 before 18.5.4, and 18.6 before 18.6.2 that could have allowed an unauthenticated user to create a denial of service condition by sending crafted GraphQL queries that bypass query complexity limits.

References (3)

Core 3
Core References
Broken Link issue-tracking permissions-required
https://gitlab.com/gitlab-org/gitlab/-/issues/579152
Permissions Required technical-description exploit permissions-required
https://hackerone.com/reports/3360710

Scores

CVSS v3 7.5
EPSS 0.0010
EPSS Percentile 28.0%
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-770
Status published
Products (1)
gitlab/gitlab 11.10.0 - 18.4.6 (2 CPE variants)
Published Dec 11, 2025
Tracked Since Feb 18, 2026