CVE-2025-0314
📋 TL;DR
This vulnerability allows attackers to inject malicious scripts through improperly rendered file types in GitLab, leading to cross-site scripting (XSS). All GitLab CE/EE instances running affected versions are vulnerable, potentially compromising user sessions and data.
💻 Affected Systems
- GitLab Community Edition
- GitLab Enterprise Edition
📦 What is this software?
Gitlab by Gitlab
GitLab is a complete DevOps platform providing source code management, CI/CD pipelines, security scanning, container registry, and collaboration tools used by millions of developers and thousands of enterprises worldwide. As both a cloud-hosted SaaS offering (GitLab.com) and self-managed software, G...
Learn more about Gitlab →Gitlab by Gitlab
GitLab is a complete DevOps platform providing source code management, CI/CD pipelines, security scanning, container registry, and collaboration tools used by millions of developers and thousands of enterprises worldwide. As both a cloud-hosted SaaS offering (GitLab.com) and self-managed software, G...
Learn more about Gitlab →Gitlab by Gitlab
GitLab is a complete DevOps platform providing source code management, CI/CD pipelines, security scanning, container registry, and collaboration tools used by millions of developers and thousands of enterprises worldwide. As both a cloud-hosted SaaS offering (GitLab.com) and self-managed software, G...
Learn more about Gitlab →Gitlab by Gitlab
GitLab is a complete DevOps platform providing source code management, CI/CD pipelines, security scanning, container registry, and collaboration tools used by millions of developers and thousands of enterprises worldwide. As both a cloud-hosted SaaS offering (GitLab.com) and self-managed software, G...
Learn more about Gitlab →Gitlab by Gitlab
GitLab is a complete DevOps platform providing source code management, CI/CD pipelines, security scanning, container registry, and collaboration tools used by millions of developers and thousands of enterprises worldwide. As both a cloud-hosted SaaS offering (GitLab.com) and self-managed software, G...
Learn more about Gitlab →Gitlab by Gitlab
GitLab is a complete DevOps platform providing source code management, CI/CD pipelines, security scanning, container registry, and collaboration tools used by millions of developers and thousands of enterprises worldwide. As both a cloud-hosted SaaS offering (GitLab.com) and self-managed software, G...
Learn more about Gitlab →⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal session cookies, perform actions as authenticated users, deface content, or redirect users to malicious sites, leading to full account compromise and data exfiltration.
Likely Case
Attackers inject malicious scripts to steal session tokens or credentials from authenticated users, potentially gaining unauthorized access to repositories and sensitive data.
If Mitigated
With proper input validation and output encoding controls, the impact is limited to minor content manipulation without session compromise.
🎯 Exploit Status
Exploitation requires user interaction with malicious content, but detailed technical information is available in public reports.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 17.6.4, 17.7.3, or 17.8.1
Vendor Advisory: https://gitlab.com/gitlab-org/gitlab/-/issues/512118
Restart Required: No
Instructions:
1. Backup your GitLab instance. 2. Update to GitLab 17.6.4, 17.7.3, or 17.8.1 using your deployment method (Omnibus, Docker, source). 3. Verify the update completed successfully.
🔧 Temporary Workarounds
Disable file uploads for untrusted users
allRestrict file upload permissions to trusted users only to reduce attack surface.
Configure via GitLab Admin Area > Settings > General > Visibility and access controls
🧯 If You Can't Patch
- Implement strict Content Security Policy (CSP) headers to mitigate XSS impact
- Use web application firewall (WAF) rules to block suspicious file upload patterns
🔍 How to Verify
Check if Vulnerable:
Check GitLab version via Admin Area or run: sudo gitlab-rake gitlab:env:info | grep 'Version:'Check Version:
sudo gitlab-rake gitlab:env:info | grep 'Version:'Verify Fix Applied:
Confirm version is 17.6.4, 17.7.3, or 17.8.1 or higher using the same command.📡 Detection & Monitoring
Log Indicators:
- Unusual file upload patterns
- JavaScript execution errors in application logs
- User reports of unexpected page behavior
Network Indicators:
- Suspicious file uploads with script-like content
- Unexpected outbound connections from GitLab instance
SIEM Query:
source="gitlab.log" AND ("file upload" OR "XSS" OR "script")