CVE-2026-42521

medium

Published 2026-04-29 · Modified 2026-05-08

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

6.5

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

CVSS v4 NEW

—

not yet in upstream

VIR risk

6.5

Description

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

Predictions

Exploit likelihood

75%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Package impact

Ecosystem	Package	Vulnerable	Fixed
Maven	org.jenkins-ci.plugins:matrix-auth	`>=2.0-beta-1,<3.2.10`	`3.2.10`
MAVEN	org.jenkins-ci.plugins:matrix-auth	`>= 2.0-beta-1, <= 3.2.9`	`3.2.10`

Application impact

Vendor	Product	Versions	Fixed
jenkins	matrix_authorization_strategy	`{"startIncluding":"2.1","endExcluding":"3.2.10"}`	`3.2.10`
jenkins	matrix_authorization_strategy	`2.0`

References

CWEs

CWE-502

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.