CVE-2026-42524: Jenkins HTML Publisher Plugin has a XSS vulnerability in the legacy wrapper file

CVE-2026-42524 · Severity: high · CVSS 8 · Published 2026-04-29

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.

Technologies: org.jenkins-ci.plugins:htmlpublisher (Maven). Vendors: Jenkins, Maven.

Quick answers

Is CVE-2026-42524 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-42524 being exploited in the wild.
How severe is CVE-2026-42524?
High severity, with a CVSS score of 8, published 29 April 2026.
Which products and versions are affected?
org.jenkins-ci.plugins:htmlpublisher (Maven) ECOSYSTEM:introduced=0,fixed=427.1.
Is there a fix for CVE-2026-42524?
Yes. org.jenkins-ci.plugins:htmlpublisher (Maven): upgrade to 427.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2026-42524?
Check whether you run Jenkins Html Publisher or org.jenkins-ci.plugins:htmlpublisher (Maven) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • org.jenkins-ci.plugins:htmlpublisher (Maven): upgrade to 427.1 or later
    # set org.jenkins-ci.plugins:htmlpublisher to 427.1 in your pom.xml or build.gradle

Affected products

  • Jenkins Html Publisher
  • org.jenkins-ci.plugins:htmlpublisher (Maven) ECOSYSTEM:introduced=0,fixed=427.1

Identifiers

  • CVE-2026-42524
  • GHSA-f8h4-46xv-h7jj

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