SB20260925260 - Multiple vulnerabilities in Java HTML Sanitizer

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB20260925260

SB20260925260 - Multiple vulnerabilities in Java HTML Sanitizer

Published: September 25, 2026

Security Bulletin ID SB20260925260
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Uncontrolled Recursion (CVE-ID: N/A)

CWE-ID: CWE-674 - Uncontrolled Recursion

CVSSv4: 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]


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.


2) Inefficient Algorithmic Complexity (CVE-ID: N/A)

CWE-ID: CWE-407 - Inefficient Algorithmic Complexity

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to inefficient algorithmic complexity in the CSS lexer when processing a run of unmatched close brackets after a run of open brackets. A remote attacker can submit CSS containing a long sequence of open brackets followed by unmatched close brackets to cause a denial of service.


Remediation

Install update from vendor's website.

References