Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2023-26119

CVE-2023-26119CRITICAL

n/a net.sourceforge.htmlunit:htmlunit — Versions of the package net.sourceforge.htmlunit:htmlunit from 0 and before 3.0.0 are vulnerable to Remote Code Execution (RCE) via XSTL,…

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  H  H  H    9.8   .0251   84.5     —

AFFECTED
  Product                            Versions     Fixed
  net.sourceforge.htmlunit:htmlunit  unspecified  —

TIMELINE
  Feb 20  Reserved by snyk
  Apr 3   Published (CNA: snyk)
  Oct 8   EXPLOIT PUBLISHED — CVE-2023-26119 (net.sourceforge.htmlunit:htmlunit). Public exploit reference added.

CWE-94 · CNA: snyk · CVSS v3.1 · 3 references · NVD status: Modified

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
February 20, 2023	Reserved	Reserved by snyk
April 3, 2023	Published	Published (CNA: snyk)
October 8, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2023-26119 (net.sourceforge.htmlunit:htmlunit). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
n/a	net.sourceforge.htmlunit:htmlunit	—	—	—

Weaknesses

CWE-94

References (3)

https://github.com/HtmlUnit/htmlunit/commit/641325bbc84702dc9800ec7037aec061ce21956b [Patch]
https://security.snyk.io/vuln/SNYK-JAVA-NETSOURCEFORGEHTMLUNIT-3252500 [Third Party Advisory]
https://siebene.github.io/2022/12/30/HtmlUnit-RCE/ [Exploit, Third Party Advisory]

Authoritative record: CVE-2023-26119 at cve.org

Weaknesses: CWE-94

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2023-26119 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.