CVE-2025-1908
📋 TL;DR
This vulnerability in GitLab EE/CE allows attackers to track users' browsing activities through a flaw that could lead to full account takeover. It affects all GitLab instances running vulnerable versions, potentially exposing user sessions and sensitive 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
Full account takeover leading to unauthorized access to repositories, source code, CI/CD pipelines, and sensitive organizational data.
Likely Case
User session hijacking and unauthorized access to private repositories and project data.
If Mitigated
Limited exposure of user activity patterns without direct account compromise.
🎯 Exploit Status
Exploitation requires some user interaction but can be automated. The HackerOne report suggests active exploitation vectors.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 17.9.7, 17.10.5, or 17.11.1
Vendor Advisory: https://gitlab.com/gitlab-org/gitlab/-/issues/523065
Restart Required: Yes
Instructions:
1. Backup your GitLab instance. 2. Update to GitLab 17.9.7, 17.10.5, or 17.11.1 using your package manager. 3. Restart GitLab services. 4. Verify the update completed successfully.
🔧 Temporary Workarounds
Restrict User Access
allLimit user permissions and implement strict access controls to reduce attack surface.
Network Segmentation
allIsolate GitLab instances from untrusted networks and implement strict firewall rules.
🧯 If You Can't Patch
- Implement strict network access controls and monitor for suspicious user activity patterns.
- Enable enhanced logging and implement session timeout policies to limit exposure windows.
🔍 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 17.9.7, 17.10.5, or 17.11.1 or higher. Test user session behavior.📡 Detection & Monitoring
Log Indicators:
- Unusual session patterns
- Multiple failed login attempts from same IP
- Unexpected user agent changes
Network Indicators:
- Abnormal API request patterns
- Suspicious redirect sequences
- Unexpected cross-origin requests
SIEM Query:
source="gitlab" AND (event="session_hijack" OR event="unauthorized_access")