CVE-2026-42521

MEDIUM

Jenkins Project Jenkins Matrix Authorization Strategy Plugin < 3.2.9 - Information Disclosure

Title source: rule

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.

References (1)

[Vendor Advisory] https://www.jenkins.io/security/advisory/2026-04-29/#SECURITY-3676

Scores

CVSS v3 6.5

EPSS 0.0004

EPSS Percentile 10.6%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-502

Status published

Products (1)

Jenkins Project/Jenkins Matrix Authorization Strategy Plugin 2.0-beta-1 - 3.2.9

Published Apr 29, 2026

Tracked Since Apr 29, 2026