CVE-2026-92231
Published:September 29, 2026
Updated:October 15, 2026
Joomla! Core - [20260915] - Core - XSS filter bypass in InputFilter via HTML5 entity decode mismatch in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3 - The checkAttribute method normalized an attribute value before testing it against the "javascript:" scheme regex, however without decoding HTML5 entities beforehand, causing an XSS vector.
Affected Packages
https://github.com/joomla-framework/filter.git (GITHUB):
Affected version(s) >=4.0.0 <4.1.1Fix Suggestion:
Update to version 4.1.1https://github.com/joomla-framework/filter.git (GITHUB):
Affected version(s) >=3.0.0 <3.0.7Fix Suggestion:
Update to version 3.0.7joomla/filter (PHP):
Affected version(s) >=3.0.0 <3.0.7Fix Suggestion:
Update to version 3.0.7joomla/filter (PHP):
Affected version(s) >=4.0.0 <4.1.1Fix Suggestion:
Update to version 4.1.1Related Resources (2)
Do you need more information?
Contact UsCVSS v4
Base Score:
7.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
HIGH
User Interaction
PASSIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
Exploit Maturity
POC
CVSS v3
Base Score:
6.4
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
LOW
Weakness Type (CWE)
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
EPSS
Base Score:
0.27