CVE-2026-92139 Jenkins Project CVE debrief

Who should care

Jenkins administrators and users who have configured Bitbucket credentials in Jenkins should verify their configuration and monitor for suspicious webhook payloads to mitigate potential risks. This vulnerability affects those who use Jenkins with Bitbucket credentials configured, as it allows attackers to capture these credentials by sending a crafted webhook payload. Verification of configuration and monitoring of webhook payloads are crucial steps in Mit

Why it matters

CVE-2026-92139 is a medium-severity vulnerability in the Jenkins Bitbucket Push and Pull Request Plugin that allows attackers to capture Bitbucket credentials stored in Jenkins. Jenkins administrators and users who have configured Bitbucket credentials in Jenkins should verify their configuration and monitor for suspicious webhook payloads.

• Capture of Bitbucket credentials stored in Jenkins
• Potential unauthorized access to Bitbucket accounts

Technical summary

The Jenkins Bitbucket Push and Pull Request Plugin 4.0.1 and earlier trusts values provided in the webhook payload, including certain URLs, and uses configured Bitbucket credentials to connect to those URLs. This allows attackers to capture Bitbucket credentials stored in Jenkins by sending a crafted webhook payload. The vulnerability has a medium severity and affects Jenkins administrators and users who have configured Bitbucket credentials in Jenkins. To mitigate potential risks, it is recommended to verify Bitbucket credentials configuration and monitor for suspicious webhook payloads.

Defensive priority

Jenkins administrators should verify Bitbucket credentials configuration and monitor for suspicious webhook payloads.

Recommended defensive actions

• Verify Bitbucket credentials configuration in Jenkins
• Monitor for suspicious webhook payloads
• Update Jenkins Bitbucket Push and Pull Request Plugin to a non-vulnerable version if available
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD entry provide limited information about the vulnerability. The Jenkins Bitbucket Push and Pull Request Plugin 4.0.1 and earlier trusts values provided in the webhook payload, including certain URLs, and uses configured Bitbucket credentials to connect to those URLs.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.