CVE-2025-7659
📋 TL;DR
This vulnerability in GitLab allows unauthenticated attackers to bypass validation in the Web IDE feature, potentially stealing authentication tokens and accessing private repositories. It affects all GitLab Community Edition and Enterprise Edition installations running vulnerable versions.
💻 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
Complete compromise of private repositories including source code, credentials, and sensitive data stored in GitLab, potentially leading to supply chain attacks or intellectual property theft.
Likely Case
Unauthorized access to private repositories, token theft enabling lateral movement, and potential data exfiltration.
If Mitigated
Limited impact if proper network segmentation, authentication controls, and monitoring are in place to detect unusual access patterns.
🎯 Exploit Status
Exploitation requires no authentication and leverages incomplete validation in Web IDE endpoints. Attack vectors are well-documented in the HackerOne report.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 18.6.6, 18.7.4, or 18.8.4
Vendor Advisory: https://about.gitlab.com/releases/2026/02/10/patch-release-gitlab-18-8-4-released/
Restart Required: Yes
Instructions:
1. Backup your GitLab instance. 2. Update to GitLab 18.6.6, 18.7.4, or 18.8.4 depending on your current version. 3. Restart GitLab services. 4. Verify the update was successful.
🔧 Temporary Workarounds
Disable Web IDE
linuxTemporarily disable the Web IDE feature to prevent exploitation
gitlab-rails runner "ApplicationSetting.current.update!(web_ide_enabled: false)"
Restrict Network Access
linuxLimit GitLab instance access to trusted networks only
iptables -A INPUT -p tcp --dport 80,443 -s TRUSTED_NETWORK -j ACCEPT
iptables -A INPUT -p tcp --dport 80,443 -j DROP
🧯 If You Can't Patch
- Implement strict network access controls to limit GitLab exposure
- Enable enhanced logging and monitoring for Web IDE access patterns
🔍 How to Verify
Check if Vulnerable:
Check GitLab version via admin interface or run: sudo gitlab-rake gitlab:env:info | grep 'GitLab version'Check Version:
sudo gitlab-rake gitlab:env:info | grep 'GitLab version'Verify Fix Applied:
Confirm version is 18.6.6, 18.7.4, or 18.8.4 or higher. Test Web IDE functionality to ensure it works without allowing unauthorized access.📡 Detection & Monitoring
Log Indicators:
- Unusual Web IDE access from unauthenticated users
- Multiple failed authentication attempts followed by Web IDE access
- Access to private repositories from unexpected IP addresses
Network Indicators:
- HTTP requests to /-/ide/* endpoints without proper authentication headers
- Unusual traffic patterns to GitLab Web IDE endpoints
SIEM Query:
source="gitlab" AND (uri_path="/-/ide/*" AND http_status=200) AND NOT user_id=*