CVE-2025-54476 json
Joomla! Core - [20250901] Inadequate content filtering within the checkAttribute filter code
published last yr. modified 4mo ago also GHSA-fm22-g2q9-j3pw , EUVD-2025-31744
- cvss
- 4.8
- version 4.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 24%
- public exploits
- 0
- none known
Summary
Improper handling of input could lead to an XSS vector in the checkAttribute method of the input filter framework class.
Patch / fix
- packagist joomla/filter 2.0.6, 3.0.5, 4.0.1
Is CVE-2025-54476 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- last yr.
Exploit prediction
0.31% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 4.8 | 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 |
| CNA | 4.0 | 4.8 | 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | joomla/filter | >=4.0.0, <4.0.1 >=3.0.0, <3.0.5 <2.0.6 |
4.0.1 3.0.5 2.0.6 |
Affected products
- Joomla! Project Joomla! CMS
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/joomla-framework/filter/commit/188dd3fccd6fa0532d105a52736affdf6b166217
web
-
github.com
/joomla-framework/filter/commit/852c7e101c649500d3af58ffb8baf15d7c86d825
web
-
github.com
/joomla-framework/filter/commit/fcde280785f188e93530f7da68102f7dd8f9f723
web
-
developer.joomla.org
/security-centre/1010-20250901-core-inadequate-content-filtering-within-the-checkattribute-filter-code.html
vendor-advisory, web
-
nvd.nist.gov
/vuln/detail/CVE-2025-54476
advisory
-
github.com
/joomla/joomla-cms
package
Sources
- CVE List CVE-2025-54476
- GitHub Advisory GHSA-fm22-g2q9-j3pw
- NVD CVE-2025-54476
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