CVE-2023-26119: Htmlunit

Critical severity, CVSS 9.8. EPSS: 2.5% chance of exploitation in the next 30 days.

Versions of the package net.sourceforge.htmlunit:htmlunit from 0 and before 3.0.0 are vulnerable to Remote Code Execution (RCE) via XSTL, when browsing the attacker’s webpage.

Affected products

• Htmlunit Htmlunit: before 3.0.0 (fixed in 3.0.0)

Published 2023-04-03. Last modified 2026-10-08.