CVE-2026-42521

Description

Jenkins Matrix Authorization Strategy Plugin 2.0-beta-1 through 3.2.9 (both inclusive) invokes parameterless constructors of classes specified in configuration when deserializing inheritance strategies, without restricting the classes that can be instantiated, allowing attackers with Item/Configure permission to instantiate arbitrary types, which may lead to information disclosure or other impacts depending on the classes available on the classpath.

PUBLISHED Reserved 2026-04-28 | Published 2026-04-29 | Updated 2026-04-29 | Assigner jenkins

Product status

References

www.jenkins.io/security/advisory/2026-04-29/ (Jenkins Security Advisory 2026-04-29) vendor-advisory

cve.org (CVE-2026-42521)

nvd.nist.gov (CVE-2026-42521)

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