CVE-2025-47886
📋 TL;DR
A CSRF vulnerability in Jenkins Cadence vManager Plugin allows attackers to trick authenticated users into unknowingly connecting the plugin to attacker-controlled servers with attacker-provided credentials. This affects Jenkins instances running the vulnerable plugin version. Attackers could potentially capture sensitive data or credentials from the targeted Jenkins environment.
💻 Affected Systems
- Jenkins Cadence vManager Plugin
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could redirect plugin connections to malicious servers, capturing sensitive Jenkins data, credentials, or proprietary information from connected Cadence vManager systems.
Likely Case
Attackers could harvest credentials or configuration data from the Jenkins environment, potentially leading to further compromise of the CI/CD pipeline.
If Mitigated
With proper CSRF protections and network segmentation, impact is limited to potential credential exposure without direct system compromise.
🎯 Exploit Status
Exploitation requires social engineering to trick authenticated users. No authentication bypass is involved.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Update to version 4.0.1-287.v9e25a_740b_a_49 or later
Vendor Advisory: https://www.jenkins.io/security/advisory/2025-05-14/#SECURITY-3548
Restart Required: Yes
Instructions:
1. Navigate to Jenkins Manage Jenkins > Manage Plugins. 2. Go to Available tab. 3. Search for 'Cadence vManager Plugin'. 4. Check for updates and install version 4.0.1-287.v9e25a_740b_a_49 or later. 5. Restart Jenkins after installation.
🔧 Temporary Workarounds
Enable CSRF Protection
allEnsure Jenkins CSRF protection is enabled globally
Check Manage Jenkins > Configure Global Security > Enable CSRF Protection
Restrict Plugin Access
allLimit plugin configuration access to trusted administrators only
Configure role-based access control to restrict plugin management permissions
🧯 If You Can't Patch
- Implement strict network segmentation to isolate Jenkins from untrusted networks
- Educate users about CSRF risks and safe browsing practices
🔍 How to Verify
Check if Vulnerable:
Check plugin version in Jenkins: Manage Jenkins > Manage Plugins > Installed tab, look for Cadence vManager Plugin versionCheck Version:
Check Jenkins plugin manager or examine $JENKINS_HOME/plugins/cadence-vmanager/META-INF/MANIFEST.MFVerify Fix Applied:
Verify plugin version is 4.0.1-287.v9e25a_740b_a_49 or later after update📡 Detection & Monitoring
Log Indicators:
- Unexpected plugin configuration changes
- Connections to unfamiliar URLs in plugin logs
Network Indicators:
- Outbound connections from Jenkins to unexpected external servers on plugin-related ports
SIEM Query:
source="jenkins" AND (event="plugin_config_change" OR event="external_connection") AND plugin="cadence-vmanager"