CVE-2025-11447

HIGH

GitLab CE/EE <18.3.5-18.5.1 - DoS

Title source: llm

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 11.0 before 18.3.5, 18.4 before 18.4.3, and 18.5 before 18.5.1 that could have allowed an unauthenticated attacker to cause a denial of service condition by sending GraphQL requests with crafted JSON payloads.

References (3)

[Release Notes, Vendor Advisory] https://about.gitlab.com/releases/2025/10/22/patch-release-gitlab-18-5-1-released/

[Broken Link] https://gitlab.com/gitlab-org/gitlab/-/issues/574858

[Permissions Required] https://hackerone.com/reports/3367019

Scores

CVSS v3 7.5

EPSS 0.0010

EPSS Percentile 27.7%

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 (4)

gitlab/gitlab < 18.3.5

gitlab/gitlab

Timeline

Published Oct 27, 2025

Tracked Since Feb 18, 2026