~ / search / GHSA-jp9r-mmhw-vff3

GHSA-jp9r-mmhw-vff3

Jenkins Matrix Authorization Strategy Plugin: Unsafe deserialization allows invocation of parameterless constructors

Source: GitHub Advisory Database (reviewed) Moderate CVE-2026-42521

Packages

EcosystemPackageAffectedFixed in
Maven org.jenkins-ci.plugins:matrix-auth >= 2.0-beta-1, < 3.2.10 3.2.10

Details

As written in the advisory (Markdown source, shown as plain text).

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. This can be abused by 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. Matrix Authorization Strategy Plugin 3.2.10 verifies that the class being instantiated is an inheritance strategy implementation, preventing instantiation of arbitrary types.

References

External links from the advisory. They lead to third-party sites.