Vulnerability · Published Sep 30, 2025 · Assigned by Joomla
CVE-2025-54476Joomla! Core - [20250901] Inadequate content filtering within the checkAttribute filter code
Medium 4.8
In plain English
A medium-severity cross-site scripting in Joomla! CMS from Joomla! Project. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 4.0)4.8Medium
Exploit odds (30 days)0.3%top 75.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Improper handling of input could lead to an XSS vector in the checkAttribute method of the input filter framework class.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist | joomla/filter | 4.0.1 | GHSA-fm22-g2q9-j3pw |
| Packagist | joomla/filter | 3.0.5 | GHSA-fm22-g2q9-j3pw |
| Packagist | joomla/filter | 2.0.6 | GHSA-fm22-g2q9-j3pw |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Joomla! Project | Joomla! CMS | 3.0.0-3.10.204.0.0-4.4.135.0.0-5.3.3 |
Weakness: CWE-79 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N