CVE-2026-42523

Stored XSS via Improper Job URL Handling in Jenkins GitHub Plugin

Published Apr 29, 2026 CVSS 3.1 · 9 Critical EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-w22p-4x9f-486v Jenkins GitHub Plugin has an XSS vulnerability
History
Type Values Removed Values Added
First Time appeared Jenkins
Jenkins github
CPEs cpe:2.3:a:jenkins:github:*:*:*:*:*:jenkins:*:*
Vendors & Products Jenkins
Jenkins github
Type Values Removed Values Added
First Time appeared Jenkins Project
Jenkins Project jenkins Github Plugin
Vendors & Products Jenkins Project
Jenkins Project jenkins Github Plugin
Type Values Removed Values Added
Title Stored XSS via Improper Job URL Handling in Jenkins GitHub Plugin
Type Values Removed Values Added
Weaknesses CWE-79
Metrics cvssV3_1

{'score': 9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
jenkins
Published
Updated
Apr 29, 2026, 2:29 PM
Reserved
Apr 28, 2026, 9:24 AM
Status
Analyzed
Published
Apr 29, 2026, 2:16 PM
Modified
Oct 26, 2026, 8:10 PM