medium4.8
CVE-2025-54476
Joomla! CMS vulnerable to XSS via the input filter
Impact
Improper handling of input could lead to a cross-site scripting (XSS) vector in the checkAttribute method of the input filter framework class.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| composer | joomla/filter | = 4.0.0 | 4.0.1 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://developer.joomla.org/security-centre/1010-20250901-core-inadequate-content-filtering-within-the-checkattribute-filter-code.html
- https://github.com/advisories/GHSA-fm22-g2q9-j3pw
- https://nvd.nist.gov/vuln/detail/CVE-2025-54476
- https://github.com/joomla-framework/filter/commit/188dd3fccd6fa0532d105a52736affdf6b166217
- https://github.com/joomla-framework/filter/commit/852c7e101c649500d3af58ffb8baf15d7c86d825
- https://github.com/joomla-framework/filter/commit/fcde280785f188e93530f7da68102f7dd8f9f723