Lindonb

**Name of the Vulnerable Software and Affected Versions** Tiki Wiki CMS Groupware versions 12.x through 16.x **Description** The issue is related to improper validation of the `imgsize` or `lang` parameter in TikiFilter.php, which can lead to XSS. **Recommendations** For versions 12.x through 16.x, update the TikiFilter.php to properly validate the `imgsize` and `lang` parameters to prevent XSS.