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CVE-2026-42521

AI Predicted 6.5 Difficulty: Easy EPSS 0.25% · P16

Affected Version Matrix 1

VendorProductVersion RangeStatus
Jenkins ProjectJenkins Matrix Authorization Strategy Plugin2.0-beta-1≤ 3.2.9affected
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I. Basic Information for CVE-2026-42521

Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Jenkins Matrix Authorization Strategy Plugin 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Jenkins Matrix Authorization Strategy Plugin是Jenkins开源的一个为持续集成平台提供基于矩阵的细粒度权限控制机制的插件。 Jenkins Matrix Authorization Strategy Plugin 2.0-beta-1版本至3.2.9版本存在代码问题漏洞，该漏洞源于反序列化继承策略时调用配置中指定类的无参构造函数，未限制可实例化的类，可能导致具有Item/Configure权限的攻击者实例化任意类型，根据类路径上可用的类可能导致信息泄露或其他影
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
Jenkins ProjectJenkins Matrix Authorization Strategy Plugin 2.0-beta-1 ~ 3.2.9 -

II. Public POCs for CVE-2026-42521

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III. Intelligence Information for CVE-2026-42521

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Vendor Advisories for CVE-2026-42521 (1)

Same Patch Batch · Jenkins Project · 2026-04-29 · 7 CVEs total

CVE-2026-42525Jenkins Microsoft Entra ID Plugin 输入验证错误漏洞
CVE-2026-42524Jenkins HTML Publisher Plugin 跨站脚本漏洞
CVE-2026-42523Jenkins GitHub Plugin 跨站脚本漏洞
CVE-2026-42522Jenkins GitHub Branch Source Plugin 安全漏洞
CVE-2026-42520Jenkins Credentials Binding Plugin 路径遍历漏洞
CVE-2026-42519Jenkins Script Security Plugin 安全漏洞

IV. Related Vulnerabilities

Same product: Jenkins Matrix Authorization Strategy Plugin
Same vendor: Jenkins Project

V. Comments for CVE-2026-42521

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