CVE-2026-42523

CRITICAL

Jenkins GitHub Plugin < 1.46.0 - Stored Cross-Site Scripting via GitHub Hook Trigger Validation

Title source: llm

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 (1)

Core 1

Core References

Vendor Advisory vendor-advisory

Jenkins Security Advisory 2026-04-29

https://www.jenkins.io/security/advisory/2026-04-29/#SECURITY-3704

Scores

CVSS v3 9.0

EPSS 0.0028

EPSS Percentile 19.6%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-79

Status published

Products (3)

jenkins/github < 1.46.0.1

Jenkins Project/Jenkins GitHub Plugin < 1.46.0

org.jenkins-ci.plugins/git 0 - 1.46.0.1Maven

Published Apr 29, 2026

Tracked Since Apr 29, 2026