CVE-2026-84670

High

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.

SeverityHigh

CVSS8.8

Exploit probability—

ProductJenkins Performance Plugin

PublishedSep 2, 2026

First seenSep 2, 2026

Weakness typeCWE-502Deserialization of untrusted data

How to fix

Vendor advisories

jenkins.io/security/advisory/2026-09-02/#SECURITY-4026

Affected products

Product	Affected versions	Fixed in
Jenkins Project Jenkins Performance Plugin	v ≤ 1015.v09ca_52b_3370e	—

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