CVE-2025-0555 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab

High 7.7 Published 3 Mar 2025 Updated 4 Mar 2025

An attacker can execute arbitrary scripts in a user's browser via XSS in GitLab, bypassing security controls.

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

What is CVE-2025-0555?

CVE-2025-0555 is a high-severity cross-site scripting vulnerability in Gitlab Gitlab, published on 3 Mar 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

A Cross Site Scripting (XSS) vulnerability in GitLab-EE affecting all versions from 16.6 prior to 17.7.6, 17.8 prior to 17.8.4, and 17.9 prior to 17.9.1 allows an attacker to bypass security controls and execute arbitrary scripts in a users browser under specific conditions.

Weakness: CWE-79

Which versions are affected by CVE-2025-0555?

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

Package	Affected	Fixed in
`gitlab` Bitnami	From `16.6.0`	`17.9.1`

Products include Gitlab Gitlab.

How do I fix CVE-2025-0555?

Upgrade gitlab to 17.9.1 or later.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2025-0555 being exploited?

There is no known exploitation of CVE-2025-0555 in the wild and no public exploit code.

All Gitlab Gitlab vulnerabilities

Sources

Also known as BIT-gitlab-2025-0555, GHSA-2862-gpw6-r482.