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[20210401] - Core - Escape xss in logo parameter error pages

  • Project: Joomla!
  • SubProject: CMS
  • Impact: Low
  • Severity: Low
  • Versions: 3.0.0 - 3.9.25
  • Exploit type: XSS
  • Reported Date: 2021-03-09
  • Fixed Date: 2021-04-13
  • CVE Number: CVE-2021-26030

Description

Inadequate escaping allowed XSS attacks using the logo parameter of the default templates on error pages.

Affected Installs

Joomla! CMS versions 3.0.0 - 3.9.25

Solution

Upgrade to version 3.9.26

Contact

The JSST at the Joomla! Security Centre.

Reported By: HOANG NGUYEN