Joomla CMS XSS via Language Override Validation Flaw
CVE-2026-48954 Published on July 7, 2026
Joomla! Core - [20260708] - XSS through language overrides
Improper validation leads to a generic XSS vector in the language override feature.
Vulnerability Analysis
CVE-2026-48954 is exploitable with network access. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.
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-2026-48954 has been classified to as a XSS vulnerability or weakness.
Products Associated with CVE-2026-48954
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Affected Versions
Joomla! Project Joomla! CMS:- Version 3.0.0-5.4.6 is affected.
- Version 6.0.0-6.1.1 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.