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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Jenkins Project | Jenkins Matrix Authorization Strategy Plugin | 2.0-beta-1 – ≤ 3.2.9 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | jenkins-2-openjdk-21 | 2.560-r1 | — |
| Wolfi rolling | jenkins-2-openjdk-25 | 2.563-r0 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | org.jenkins-ci.plugins:matrix-auth | >= 2.0-beta-1, < 3.2.10 | 3.2.10 | GHSA-jp9r-mmhw-vff3 |
Advisories 1
- WID-SEC-2026-1320 Jenkins Plugins: Mehrere Schwachstellen BSI CERT-Bund (WID) · Apr 29, 2026
References
- Jenkins Security Advisory 2026-04-29 vendor-advisory