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Jenkins CVE-2026-42523

| EUVDEUVD-2026-26225 CRITICAL
Cross-site Scripting (XSS) (CWE-79)
2026-04-29 jenkins GHSA-w22p-4x9f-486v
Jenkins XSS
9.0
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
9.0 CRITICAL
AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
CVSS changed
Apr 29, 2026 - 15:22 NVD
9.0 (None) 9.0 (CRITICAL)
EUVD ID Assigned
Apr 29, 2026 - 14:00 euvd
EUVD-2026-26225
CVE Published
Apr 29, 2026 - 13:31 nvd
CRITICAL 9.0

DescriptionCVE.org

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.

Analysis

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.

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CVE-2026-42523 vulnerability details – vuln.today
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