Gibbon · Gibbon · CVE-2021-40492
**Name of the Vulnerable Software and Affected Versions**
Gibbon version 22
**Description**
A reflected XSS issue exists in multiple pages of the Gibbon application, allowing for arbitrary execution of JavaScript. This is achieved by manipulating parameters such as `gibbonCourseClassID`, `gibbonPersonID`, `subpage`, `currentDate`, or `allStudents` in the `index.php` page.
**Recommendations**
For version 22, consider disabling the execution of JavaScript in the affected pages as a temporary workaround until a patch is available. Restrict access to the `index.php` page to minimize the risk of exploitation. Avoid using the parameters `gibbonCourseClassID`, `gibbonPersonID`, `subpage`, `currentDate`, or `allStudents` in the affected API endpoint until the issue is resolved.