What’s Vulnerable › Vulnerabilities

CVE-2023-26119

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-04-03 · updated 2026-10-08
• Weakness: CWE-94

Description

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

• net.sourceforge.htmlunit:htmlunit: before 3.0.0 — fixed in 3.0.0

How to fix

Upgrade to a fixed version: net.sourceforge.htmlunit:htmlunit 3.0.0. Check the vendor advisory for mitigations.

References

• https://github.com/HtmlUnit/htmlunit/commit/641325bbc84702dc9800ec7037aec061ce21956b
• https://security.snyk.io/vuln/SNYK-JAVA-NETSOURCEFORGEHTMLUNIT-3252500
• https://siebene.github.io/2022/12/30/HtmlUnit-RCE/
• https://github.com/HtmlUnit/htmlunit/commit/641325bbc84702dc9800ec7037aec061ce21956b
• https://security.snyk.io/vuln/SNYK-JAVA-NETSOURCEFORGEHTMLUNIT-3252500
• https://siebene.github.io/2022/12/30/HtmlUnit-RCE/

Get alerted when CVE-2023-26119 or the next vulnerability affects your stack