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CVE-2026-42524

8.0 · HIGH

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 wi…

Published Apr 29, 2026jenkinsCWE-79EPSS 0.28%

Overview

CVE-2026-42524 is a high-severity vulnerability affecting jenkins html_publisher. It was published on April 29, 2026 and has a CVSS 3.1 base score of 8.0 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.0, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories and patches from jenkins. Update html_publisher to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
jenkinshtml_publisher0Affected

References

Refwww.jenkins.io/security/advisory/2026-04-29/#SECURITY-3706

How CyberStrike helps

Frequently asked questions

What is CVE-2026-42524?

CVE-2026-42524 is a high-severity vulnerability affecting jenkins html_publisher. It was published on April 29, 2026 and has a CVSS 3.1 base score of 8.0 (HIGH).

How severe is CVE-2026-42524?

This vulnerability has a CVSS 3.1 base score of 8.0, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-42524?

Check the references section for vendor advisories and patches from jenkins. Update html_publisher to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-42524?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-42524 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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