CVE-2021-32735: Cross-site scripting (XSS) from field and configuration text displayed in the Panel
Kirby is a content management system. In Kirby CMS versions 3.5.5 and 3.5.6, the Panel's ListItem component (used in the pages and files section for example) displayed HTML in page titles as it is. This 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. Kirby 3.5.7 patches 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.
Affected Software
Remediation
Patch Available
Event History
Frequently Asked Questions
What is the severity of CVE-2021-32735?
The severity of CVE-2021-32735 is classified as medium due to its potential for cross-site scripting (XSS) attacks.
How do I fix CVE-2021-32735?
To fix CVE-2021-32735, upgrade to Kirby CMS version 3.5.7 or later.
Who is affected by CVE-2021-32735?
CVE-2021-32735 affects users of Kirby CMS versions 3.5.5 and 3.5.6.
What type of vulnerability is CVE-2021-32735?
CVE-2021-32735 is a cross-site scripting (XSS) vulnerability.
What parts of Kirby CMS are impacted by CVE-2021-32735?
CVE-2021-32735 impacts the Panel's ListItem component, particularly in the pages and files sections.