Hdodov

**Name of the Vulnerable Software and Affected Versions** Kirby CMS versions 3.5.5 through 3.5.6 **Description** Kirby is a content management system. The Panel's `ListItem` component displayed HTML in page titles as it is, which could be used for cross-site scripting (XSS) attacks. Malicious authenticated Panel users can escalate their privileges if they get access to the Panel session of an admin user. Visitors without Panel access can use the attack vector if the site allows changing site data from a frontend form. **Recommendations** For versions 3.5.5 and 3.5.6, update to Kirby 3.5.7 to patch the vulnerability. As a partial workaround, site administrators can protect against attacks from visitors without Panel access by validating or sanitizing provided data from the frontend form.