CVE-2026-42521
MediumAdvisory
Published 29 Apr 2026In the index since 6 Sept 2026
- Severity
- Medium
- worst across findings
- CVSS
- 6.5
- base score, highest
- EPSS
- 0.002
- 16th percentile
- CISA KEV
- Not listed
- no confirmed exploitation
- Charts affected
- 7
- of 17,781 indexed, latest versions
- Container images
- 5
- deployed by those charts
- Fix available
- 1 of 1
- affected package
Jenkins Matrix Authorization Strategy Plugin: Unsafe deserialization allows invocation of parameterless constructors
Carried by container images the latest versions of 7 of 17,781 indexed charts deploy, on 5 images.
| Affected package | Affected versions | Fixed in | Images |
|---|---|---|---|
| matrix-authmaven | 3.1.8, 3.2.2, 3.2.9 | 3.2.10 | 5 |
- OSV records
- GHSA-jp9r-mmhw-vff3
Charts affected
7 by stars
| Chart | Latest | Affected images | Radar Score |
|---|---|---|---|
| jenkinsjkimVerified publisher | 5.5.14 | 1 of 2See more | 7,387 |
| jenkinstestchart | 0.1.9 | 1 of 2See more | 9,102 |
| jenkinstest-jenkins | 9.1.0 | 1 of 2See more | 9,102 |
| jenkinsbook-k8sinfra-v2 | 5.1.12 | 1 of 2See more | 8,323 |
| clusterfactoryclusterfactory | 0.2.0 | 1 of 5See more | 7,168 |
| gitea-jenkinsclusterfactory | 0.1.1 | 1 of 5See more | 5,238 |
| my-bloody-jenkinsodavid | 0.1.218 | 1 of 1See more | 5,826 |
Container images carrying it
5 by charts deploying them
A fixed version is listed for 1 of the 1 affected package.
| Container image | Digest | Package | Fixed in | Used by |
|---|---|---|---|---|
| jenkins/ | b470bcdc4ecd | matrix-auth | 3.2.10 | 2 |
| jenkins/ | c4098086090c | matrix-auth | 3.2.10 | 2 |
| jenkins/ | 95313257a8cd | matrix-auth | 3.2.10 | 1 |
| jenkins/ | de4fea113221 | matrix-auth | 3.2.10 | 1 |
| odavid/ | e7ab3bbc948e | matrix-auth | 3.2.10 | 1 |