Cross-Site Scripting Vulnerability in Joomla Article Titles by Joomla
CVE-2026-21632

5.9MEDIUM

Key Information:

Vendor

Joomla

Vendor
CVE Published:
1 April 2026

What is CVE-2026-21632?

A cross-site scripting vulnerability exists due to inadequate output escaping for article titles in Joomla. This oversight can be exploited in multiple output locations, enabling attackers to inject malicious scripts that execute in the context of the user's browser. If exploited, this could lead to unauthorized actions taken on behalf of the user, data theft, or website defacement. It is vital for Joomla users to apply appropriate security measures to mitigate this vulnerability.

Affected Version(s)

Joomla! CMS 4.0.0-5.4.3

Joomla! CMS 6.0.0-6.0.3

References

CVSS V4

Score:
5.9
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

peterhulst
.