CVE-2025-12562

HIGH

GitLab CE/EE <18.4.6-18.6.2 - DoS

Title source: llm

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)

[Release Notes, Vendor Advisory] https://about.gitlab.com/releases/2025/12/10/patch-release-gitlab-18-6-2-released/

[Broken Link] https://gitlab.com/gitlab-org/gitlab/-/issues/579152

[Permissions Required] https://hackerone.com/reports/3360710

Scores

CVSS v3 7.5

EPSS 0.0008

EPSS Percentile 22.7%

Attack Vector NETWORK

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

Classification

CWE

CWE-770

Status published

Affected Products (2)

gitlab/gitlab < 18.4.6

gitlab/gitlab < 18.4.6

Timeline

Published Dec 11, 2025

Tracked Since Feb 18, 2026