Cross-site scripting in Joomla! - CVE-2026-48905

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Main Vulnerability Database Vulnerabilities #VU132335

Cross-site scripting in Joomla! - CVE-2026-48905

Published: May 26, 2026


Vulnerability identifier: #VU132335
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Green
CVE-ID: CVE-2026-48905
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Joomla!
Affected software:
Joomla!

Detailed vulnerability description

The vulnerability allows a remote attacker to execute arbitrary script code in a victim's browser.

The vulnerability exists due to improper neutralization of input during web page generation in the cleanAttributes filter code when processing insufficiently filtered HTML content. A remote attacker can supply crafted content to execute arbitrary script code in a victim's browser.


How to mitigate CVE-2026-48905

Install security update from vendor's website.

Sources