CVE-2026-42524: XSS

Q: What is the severity of CVE-2026-42524?

CVE-2026-42524 is considered a stored cross-site scripting (XSS) vulnerability that can affect Jenkins users with specific permissions.

Q: How do I fix CVE-2026-42524?

To fix CVE-2026-42524, update the Jenkins HTML Publisher Plugin to version 428 or later to fully mitigate the issue.

Q: Who is affected by CVE-2026-42524?

Users of Jenkins with the HTML Publisher Plugin version 427 or earlier and Item/Configure permissions are affected by CVE-2026-42524.

Q: What impact can CVE-2026-42524 have?

CVE-2026-42524 can allow attackers to inject malicious scripts into job names and URLs, leading to stored XSS attacks.

Q: Is CVE-2026-42524 exploitable remotely?

Yes, CVE-2026-42524 is exploitable remotely by attackers with the appropriate permissions in Jenkins.

Published Apr 29, 2026

Updated

Jenkins HTML Publisher Plugin 427 and earlier does not escape job name and URL in the legacy wrapper file, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Item/Configure permission.

Affected Software

2 affected components

Jenkins HTML Publisher Plugin<=427

Jenkins Html Publisher Jenkins<=427

Event History

Apr 29, 2026

CVE Published

via MITRE·01:31 PM

Data Sourced

via MITRE·01:31 PM

Description

Data Sourced

via NVD·02:16 PM

DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

What is the severity of CVE-2026-42524?

CVE-2026-42524 is considered a stored cross-site scripting (XSS) vulnerability that can affect Jenkins users with specific permissions.

How do I fix CVE-2026-42524?

To fix CVE-2026-42524, update the Jenkins HTML Publisher Plugin to version 428 or later to fully mitigate the issue.

Who is affected by CVE-2026-42524?

Users of Jenkins with the HTML Publisher Plugin version 427 or earlier and Item/Configure permissions are affected by CVE-2026-42524.

What impact can CVE-2026-42524 have?

CVE-2026-42524 can allow attackers to inject malicious scripts into job names and URLs, leading to stored XSS attacks.

Is CVE-2026-42524 exploitable remotely?

Yes, CVE-2026-42524 is exploitable remotely by attackers with the appropriate permissions in Jenkins.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co

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