XSS Vulnerability in Joomla Core Product Affecting Input Filtering Mechanism
CVE-2025-63082

5.9MEDIUM

Key Information:

Vendor

Joomla
Status
Joomla! Cms
Vendor
CVE Published:
6 January 2026

What is CVE-2025-63082?

A Cross-Site Scripting (XSS) vulnerability has been identified in the Joomla Core due to inadequate filtering of input. This weakness pertains to the handling of data URLs within img tags, allowing attackers to inject malicious scripts that can execute in the context of the user's browser. This vulnerability emphasizes the importance of robust input validation mechanisms to safeguard web applications from XSS attacks.

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Affected Version(s)

Joomla! CMS 4.0.0-5.4.1

Joomla! CMS 6.0.0-6.0.1

References

https://developer.joomla.org/security-centre/1016-2026010...
vendor-advisory

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

Sho Sugiyama of SUZUKI MOTOR CORPORATION
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