XSS via checkAttribute in InputFilter Framework
CVE-2025-54476 Published on September 30, 2025
Joomla! Core - [20250901] Inadequate content filtering within the checkAttribute filter code
Improper handling of input could lead to an XSS vector in the checkAttribute method of the input filter framework class.
Weakness Type
What is a XSS Vulnerability?
The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
CVE-2025-54476 has been classified to as a XSS vulnerability or weakness.
Products Associated with CVE-2025-54476
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Affected Versions
Joomla! Project Joomla! CMS:- Version 3.0.0-3.10.20 is affected.
- Version 4.0.0-4.4.13 is affected.
- Version 5.0.0-5.3.3 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.