CVE-2023-26119 — Versions of the package net
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.
Published
2023-04-03T05:15:07.863
Last modified
2026-10-08T22:17:23.163
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
01What is this vulnerability?
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.
02Affected products
No structured affected-product list available — see references below for vendor advisories.
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.
07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2023-04-03T05:15:07.863
- Last modified: 2026-10-08T22:17:23.163
09References
- github.com — https://github.com/HtmlUnit/htmlunit/commit/641325bbc84702dc9800ec7037aec061ce21…
- security.snyk.io — https://security.snyk.io/vuln/SNYK-JAVA-NETSOURCEFORGEHTMLUNIT-3252500
- siebene.github.io — https://siebene.github.io/2022/12/30/HtmlUnit-RCE/
- github.com — https://github.com/HtmlUnit/htmlunit/commit/641325bbc84702dc9800ec7037aec061ce21…
- security.snyk.io — https://security.snyk.io/vuln/SNYK-JAVA-NETSOURCEFORGEHTMLUNIT-3252500
- siebene.github.io — https://siebene.github.io/2022/12/30/HtmlUnit-RCE/
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