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2610 articles · 156831 vulns · 36/41 feeds (7d)
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9.0
CVE-2026-42523EXPLOITEDPATCHED
jenkins · github plugin

CVE-2026-42523: Jenkins GitHub Plugin 1.46.0 and earlier improperly processes the current job URL as part of JavaScript implementing val

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.

Affected Products

VendorProductVersions
jenkinsgithub plugin0

Also Affects

Downstream vendors/products affected by this vulnerability

VendorProductSourceConfidence
jenkinsjenkinscert_advisory90%

References

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

Related News (2 articles)

Tier B
BSI Advisories27d ago
[NEU] [hoch] Jenkins Plugins: Mehrere Schwachstellen
→ No new info (linked only)
Tier C
VulDB28d ago
CVE-2026-42523 | Jenkins GitHub Plugin up to 1.46.0 cross site scripting
→ No new info (linked only)
CVSS 3.19.0 CRITICAL
VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
CISA KEV❌ No
Actively exploited✅ Yes
Patch available
https://www.jenkins.io/security/advisory/2026-04-29/#SECURITY-3704
PublishedApr 29, 2026
Last enriched28d agov2
Trending Score1
Source articles2
Independent2
Info Completeness7/14
Missing: cvss, epss, cwe, kev, exploit, iocs, mitre_attack

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Related CVEs (5)

PRE-CVE
Multiple Vulnerabilities in Jenkins Plugins
Trending: 20
HIGHCVE-2026-42524EXP
CVE-2026-42524: Jenkins HTML Publisher Plugin 427 and earlier does not escape job name and URL in the legacy wrapper file, resulting in
Trending: 1
HIGHCVE-2026-33002
Jenkins 2.442 through 2.554 (both inclusive), LTS 2.426.3 through LTS 2.541.2 (both inclusive) performs origin validation of requests made through the CLI WebSocket endpoint by computing the expected
Trending: 1
MEDIUMCVE-2026-33003
Jenkins LoadNinja Plugin 2.1 and earlier stores LoadNinja API keys unencrypted in job config.xml files on the Jenkins controller where they can be viewed by users with Item/Extended Read permission or
Trending: 1
HIGHCVE-2026-42520EXP
CVE-2026-42520: Jenkins Credentials Binding Plugin 719.v80e905ef14eb_ and earlier does not sanitize file names for file and zip file cre
Trending: 1

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Verification

State: unverified
Confidence: 0%

Vulnerability Timeline

CVE Published
Apr 29, 2026
Discovered by ZDM
Apr 29, 2026
Updated: severity, activelyExploited
Apr 29, 2026
Actively Exploited
Apr 29, 2026
Patch Available
Apr 29, 2026

Version History

v2
Last enriched 28d ago
v2Tier C28d ago

Updated severity to HIGH and marked the vulnerability as actively exploited.

severityactivelyExploited
via VulDB
v128d ago

Initial creation