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CVE-2026-42523

Quick assessment

Affected
Jenkins Project Jenkins GitHub Plugin
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Jenkins GitHub Plugin是Jenkins开源的一个为持续集成系统提供与代码托管平台集成功能的插件。 Jenkins GitHub Plugin 1.46.0及之前版本存在跨站脚本漏洞，该漏洞源于处理当前作业URL时JavaScript验证不当，可能导致存储型跨站脚本攻击，可由具有Overall/Read权限的非匿名攻击者利用。

AI Predicted 5.4 Difficulty: Easy EPSS 0.50% · P40

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 1

VendorProduct Version RangeStatus
Jenkins Project Jenkins GitHub Plugin ≤ 1.46.0 affected
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I. Basic Information for CVE-2026-42523

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Jenkins GitHub Plugin 1.46.0 and earlier improperly processes the current job URL as part of JavaScript implementing validation of the feature "GitHub hook trigger for GITScm polling", resulting in a stored cross-site scripting (XSS) vulnerability exploitable by non-anonymous attackers with Overall/Read permission.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Jenkins GitHub Plugin 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Jenkins GitHub Plugin是Jenkins开源的一个为持续集成系统提供与代码托管平台集成功能的插件。 Jenkins GitHub Plugin 1.46.0及之前版本存在跨站脚本漏洞，该漏洞源于处理当前作业URL时JavaScript验证不当，可能导致存储型跨站脚本攻击，可由具有Overall/Read权限的非匿名攻击者利用。
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

Vendor Product Affected Versions CPE Subscribe
Jenkins Project Jenkins GitHub Plugin 0 ~ 1.46.0 -

II. Public POCs for CVE-2026-42523

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III. Intelligence Information for CVE-2026-42523

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Vendor Advisories for CVE-2026-42523 (1)

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

CVE-2026-42525 Jenkins Microsoft Entra ID Plugin 输入验证错误漏洞
CVE-2026-42524 Jenkins HTML Publisher Plugin 跨站脚本漏洞
CVE-2026-42521 Jenkins Matrix Authorization Strategy Plugin 代码问题漏洞
CVE-2026-42522 Jenkins GitHub Branch Source Plugin 安全漏洞
CVE-2026-42520 Jenkins Credentials Binding Plugin 路径遍历漏洞
CVE-2026-42519 Jenkins Script Security Plugin 安全漏洞

IV. Related Vulnerabilities

Same product: Jenkins GitHub Plugin
Same vendor: Jenkins Project

V. Comments for CVE-2026-42523

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