Uncontrolled Recursion in Java HTML Sanitizer - #VU152248
Published: September 25, 2026
Vulnerability identifier: #VU152248
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-674
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to uncontrolled recursion in the CSS grammar parser when processing deeply nested CSS functions in style attributes. A remote attacker can submit untrusted HTML containing deeply nested CSS functions to cause a denial of service.
Only policies that allow style attributes are affected.
Affected software
Java HTML Sanitizer
Remediation
Install security update from vendor's website.
Java HTML Sanitizer - update to 20260924.1