CVE-2025-9957

What it is

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 11.2 before 18.9.6, 18.10 before 18.10.4, and 18.11 before 18.11.1 that under certain conditions could have allowed an authenticated user with project owner permissions to bypass group fork prevention settings due to improper authorization checks.

At a glance

Exploitability

Can be exploited over the network with an admin-level account. Limited direct impact.

Exploit odds

0.4% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2026-04-22 17:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-10-14 13:10 UTC Last updatedMost recent change to the record

Details

Published

2026-04-22 17:16 UTC

Last modified

2026-10-14 13:10 UTC

Exploit probability

0.4% · EPSS, next 30 days

Weakness

CWE-863 · Incorrect authorization

Record status

Analyzed

Affected

• GitLab < 18.9.6
• GitLab < 18.10.4
• GitLab 18.11.0

Attack profile CVSS 3.1 · 2.7

Attack vector

Network

Complexity

Low

Privileges needed

High

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None