What is CVE-2026-42524?

CVE-2026-42524 is a high-severity vulnerability in Jenkins Html_publisher, classified under Cross-site Scripting. CVSS score: 8.0/10. Published 2026-04-29.

How severe is CVE-2026-42524?

High severity. CVSS v3 base score is 8.0 out of 10.

XSS in Jenkins Html_publisher

CVE-2026-42524

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.001 (16.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.

Affected products

Jenkins Html_publisher
Jenkins Project Html Publisher Plugin — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Jenkins Security Advisory 2026-04-29 (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-42524?: CVE-2026-42524 is a high-severity vulnerability in Jenkins Html_publisher, classified under Cross-site Scripting. CVSS score: 8.0/10. Published 2026-04-29.
How severe is CVE-2026-42524?: High severity. CVSS v3 base score is 8.0 out of 10.