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    CVE-2026-42521

    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.

    Published:Apr 29, 2026
    Last Modified:May 6, 2026
    EPS:Apr 29, 2026
    EPSS Score:0.00041
    CVSS Score:6.5

    Affected Products

    Vendor
    Jenkins
    Product
    Matrix Authorization Strategy
    Vendor
    Jenkins Project
    Product
    Jenkins Matrix Authorization Strategy Plugin

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-586 Object Injection

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High