4.8

CVE-2025-54476: Joomla! Core - [20250901] Inadequate content filtering within the checkAttribute filter code

Deferred
Published 30-09-2025Last modified 01-10-2025

Vulnerability summary

CVE-2025-54476 is a medium (CVSS 4.8) Cross-site Scripting vulnerability in joomla! project joomla! cms. EPSS estimates a 0.31% chance of exploitation in the next 30 days, higher than 23.1% of scored vulnerabilities.

Overall risk
19/100
0100
Low · default modelHow is this calculated?
CVSS score
4.8/10
010
Medium · v4.0 (CVE.org)
EPSS score
0.31%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 30-09-2025
    PublishedVulnerability first disclosed.
  2. 01-10-2025
    Last modifiedVulnerability information updated.

Description

Improper handling of input could lead to an XSS vector in the checkAttribute method of the input filter framework class.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.31%

Chance of exploitation in the next 30 days

Percentile

23%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.31% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Joomla! project1 product

1 vendor · 1 product

References

1 links