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Home / CVE DB / CVE-2026-42523
Standard
Vulnerability Identifier

CVE-2026-42523

2026-04-29
Severity Assessment
9.0
CRITICAL
CVSS v3.x Score
Clinical Analysis (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.

Vector Sequencing

Attack Parameters

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Impact Consequences

Technical Impact

Changed
Scope
High
Confidentiality
High
Integrity
High
Availability
AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Weakness Classification

CWE-CWE-79

View CWE Details ↗
Timeline

Time Line

PUBLICATION
29 Apr 2026
MODIFICATION
29 Apr 2026
Impact Statistics

Key Metrics

CVSS Score
9.0
CRITICAL
Remediation Protocol

Recommended Solution

No automatic solution found. Check vendor references.
Patch Library
No direct patch listed in database.
Recommended Actions for Administrators

Immediate Action Plan

1. Inventory

Identify all affected systems in your infrastructure.

2. Assessment

Assess exposure and criticality for your organization.

3. Mitigation

Apply patches or available workarounds.

4. Verification

Test and confirm effectiveness of applied measures.

⚠️ MAXIMUM PRIORITY - Immediate action required

Sources & Bibliography
NIST NVD MITRE CVE External Reference ↗