How to fix CVE-2025-0555?

Within 7 days: Identify all affected systems running GitLab-EE affecting all and apply vendor patches promptly. Verify anti-CSRF tokens and content security policies are enforced.

Is Gitlab affected by CVE-2025-0555?

Organizations using GitLab-EE affecting all face notable risk from CVE-2025-0555, a cross-site scripting vulnerability rated CVSS 7.7. Attackers could inject malicious scripts to steal user sessions, credentials, or perform actions on behalf of authenticated users.

CVE-2025-0555

HIGH

2025-03-03 [email protected]

7.7

CVSS 3.1

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

High

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:29 vuln.today

CVE Published

Mar 03, 2025 - 16:15 nvd

HIGH 7.7

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.

Analysis

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. Rated high severity (CVSS 7.7), this vulnerability is remotely exploitable. No vendor patch available.

Technical Context

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. 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. Affected products include: Gitlab. Version information: prior to 17.7.6.

Affected Products

Gitlab.

Remediation

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +0.2

CVSS: +38

POC: 0

CVE-2025-0555 vulnerability details – vuln.today

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CVE-2025-0555

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CVE-2025-0555

CVSS Vector

Lifecycle Timeline

Tags

Description

Analysis

Technical Context

Affected Products

Remediation

Priority Score

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External POC / Exploit Code