CVE-2025-2256

HIGH

GitLab CE/EE <18.1.6-18.3.2 - DoS

Title source: llm

Description

An issue has been discovered in GitLab CE/EE affecting all versions from 7.12 before 18.1.6, 18.2 before 18.2.6, and 18.3 before 18.3.2 that could have allowed unauthorized users to render the GitLab instance unresponsive to legitimate users by sending multiple concurrent large SAML responses.

References (3)

[Release Notes, Vendor Advisory] https://about.gitlab.com/releases/2025/09/10/patch-release-gitlab-18-3-2-released/

[Broken Link] https://gitlab.com/gitlab-org/gitlab/-/issues/524633

[Permissions Required] https://hackerone.com/reports/3019485

Scores

CVSS v3 7.5

EPSS 0.0004

EPSS Percentile 11.2%

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-1284

Status published

Affected Products (2)

gitlab/gitlab < 18.1.6

gitlab/gitlab < 18.1.6

Timeline

Published Sep 12, 2025

Tracked Since Feb 18, 2026