CVE-2026-84670: Vulnerability in Jenkins Project Jenkins Performance Plugin
Description
Jenkins Performance Plugin 1015.v09ca_52b_3370e and earlier does not restrict the classes that can be instantiated when deserializing cached performance reports stored in the build directory on the Jenkins controller, allowing attackers with Item/Configure permission to execute arbitrary code on the Jenkins controller.
CVSS v3.1
Score 8.8high
Affected software
Jenkins Project
Jenkins Performance Plugin
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-84670 is a deserialization vulnerability (CWE-502) in Jenkins Performance Plugin 1015.v09ca_52b_3370e and earlier. The plugin does not restrict which classes can be instantiated when deserializing cached performance reports stored in the build directory on the Jenkins controller. An attacker with Item/Configure permission can exploit this to execute arbitrary code on the Jenkins controller, compromising confidentiality, integrity, and availability.
Potential Impact
Successful exploitation allows an attacker with Item/Configure permission to execute arbitrary code on the Jenkins controller, resulting in full compromise of the Jenkins server, including potential data theft, modification, or service disruption.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround is currently documented. Until a patch is available, restrict Item/Configure permissions to trusted users only to reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- jenkins
- Date Reserved
- 2026-09-01T21:55:27.035Z
- State
- PUBLISHED
Threat ID: 6a984667acd9273b496cc558
Added to database: 09/02/2026, 15:53:11 UTC
Last enriched: 09/07/2026, 13:40:03 UTC
Last updated: 10/15/2026, 18:48:24 UTC
Views: 40
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