CVE-2025-53650
📋 TL;DR
The Jenkins Credentials Binding Plugin versions 687.v619cb_15e923f and earlier expose sensitive credentials in error messages written to build logs. This allows attackers with access to build logs to obtain credentials that should be masked. Jenkins administrators and users with access to build logs are affected.
💻 Affected Systems
- Jenkins Credentials Binding Plugin
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers obtain administrative credentials, leading to complete Jenkins compromise, data exfiltration, or lateral movement to connected systems.
Likely Case
Unauthorized users access sensitive credentials (API keys, passwords, tokens) from build logs, enabling privilege escalation or unauthorized access to external systems.
If Mitigated
With proper access controls and log monitoring, credential exposure is detected quickly and limited to authorized personnel only.
🎯 Exploit Status
Exploitation depends on error conditions occurring during builds and attackers having access to view build logs.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 688.vfa_436a_b_7e14 or later
Vendor Advisory: https://www.jenkins.io/security/advisory/2025-07-09/#SECURITY-3499
Restart Required: Yes
Instructions:
1. Navigate to Jenkins Manage Jenkins > Manage Plugins. 2. Go to Available tab. 3. Search for 'Credentials Binding Plugin'. 4. Check for updates and install version 688.vfa_436a_b_7e14 or later. 5. Restart Jenkins after installation.
🔧 Temporary Workarounds
Restrict Build Log Access
allLimit access to build logs to only authorized users through Jenkins permissions.
Configure Jenkins permissions via Manage Jenkins > Configure Global Security > Matrix-based security or Role-based strategy
Disable Detailed Error Logging
allConfigure Jenkins to suppress detailed error messages in build logs.
Set system property -Dhudson.util.IOException2.REPORT_STACK_TRACE=false in Jenkins JVM arguments
🧯 If You Can't Patch
- Implement strict access controls to limit who can view build logs.
- Monitor build logs for credential exposure and implement alerting for suspicious access patterns.
🔍 How to Verify
Check if Vulnerable:
Check Jenkins plugin manager for Credentials Binding Plugin version. If version is 687.v619cb_15e923f or earlier, the system is vulnerable.Check Version:
On Jenkins web interface: Manage Jenkins > Manage Plugins > Installed tab, search for 'Credentials Binding Plugin'Verify Fix Applied:
Verify plugin version is 688.vfa_436a_b_7e14 or later in Manage Jenkins > Manage Plugins > Installed tab.📡 Detection & Monitoring
Log Indicators:
- Build logs containing unmasked credentials in error messages
- Patterns of credential strings (API keys, passwords) in Jenkins logs
Network Indicators:
- Unusual access patterns to build log endpoints by unauthorized users
SIEM Query:
source="jenkins.log" AND ("credentials" OR "password" OR "token" OR "secret") AND "error"