CVE-2023-49093

HtmlUnit vulnerable to Remote Code Execution (RCE) via XSTL

HIGH
8.8
CVSS Score
Published: December 4, 2023 at 04:47 AM UTC
Updated: June 17, 2026 at 06:35 AM UTC
1 product affected across 1 vendorHtmlUnit

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Severity
HIGH8.8
Exploit prediction
EPSS 2%
SSVC
PoC

Description

HtmlUnit is a GUI-less browser for Java programs. HtmlUnit is vulnerable to Remote Code Execution (RCE) via XSTL, when browsing the attacker’s webpage. This vulnerability has been patched in version 3.9.0

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 3.9.0
Affected range stops below 3.9.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCAutomatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-94NVD-CWE-noinfo

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