CVE-2025-11990 Improper Handling of URL Encoding (Hex Encoding) in GitLab

Low 3.1 Published Updated

Authenticated users can exploit improper URL encoding and redirect handling to obtain CSRF tokens, bypassing security controls in GitLab EE.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
Available

What is CVE-2025-11990?

CVE-2025-11990 is a low-severity vulnerability in Gitlab Gitlab, published on 15 Nov 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

GitLab has remediated an issue in GitLab EE affecting all versions from 18.4 before 18.4.4, and 18.5 before 18.5.2 that could have allowed an authenticated user to gain CSRF tokens by exploiting improper input validation in repository references combined with redirect handling weaknesses.

Weakness: CWE-22, CWE-177

Which versions are affected by CVE-2025-11990?

1 open source package ship an affected version, including gitlab. It affects 1 product.

PackageAffectedFixed in
gitlab BitnamiFrom 18.4.018.4.4, 18.5.2

Products include Gitlab Gitlab.

How do I fix CVE-2025-11990?

Upgrade gitlab to a fixed version for your release line: 18.4.4 or 18.5.2.

Is CVE-2025-11990 being exploited?

There is no known exploitation of CVE-2025-11990 in the wild and no public exploit code.

All Gitlab Gitlab vulnerabilities

Sources

Also known as BIT-gitlab-2025-11990, GHSA-cf8f-2f35-r5wx, UBUNTU-CVE-2025-11990.

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