9.8

CVE-2023-26119: htmlunit Code Injection

CVSS: 9.8v3.1CriticalModified
AliasesCGA-6q7w-3v8h-8728CGA-79w4-r862-6jj9CGA-c7h7-pjch-g7vp
Published 03-04-2023Last modified 08-10-2026
Open JSON

Vulnerability summary

CVE-2023-26119 is a critical (CVSS 9.8) Code Injection vulnerability in htmlunit. EPSS estimates a 2.51% chance of exploitation in the next 30 days, higher than 84.6% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
2.51%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 03-04-2023
    PublishedVulnerability first disclosed.
  2. 08-10-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

2.51%

Chance of exploitation in the next 30 days

Percentile

85%

Versus all other CVEs

30-day change

0.00 pp

From 2.51% on 21-09-2026

21-09-202621-10-2026
EPSS score
2.51%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (siebene.github.io)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Chainguard3 products
  • hadoop-fips-3.3.6All versions (No fix recorded)
  • hadoop-fips-3.4.2All versions (No fix recorded)
  • hadoop-fips-3.5All versions (No fix recorded)
Htmlunit1 product
Net.sourceforge.htmlunit1 product
  • htmlunit< 3.0.0

3 vendors · 5 products

References

7 links