CVE-2026-9349 | calcom cal.diy up to 4.9.4 Generic React API bookings-single-view.getServerSideProps.tsx getServerSideProps cancelledBy/rescheduledBy information disclosure
A vulnerability identified as problematic has been detected in calcom cal.diy up to 4.9.4. Affected by this issue is the function getServerSideProps of the file apps/web/modules/bookings/views/bookings-single-view.getServerSideProps.tsx of the component Generic React API. This manipulation of the argument cancelledBy/rescheduledBy causes information disclosure.
This vulnerability is handled as CVE-2026-9349. The attack can be initiated remotely. Additionally, an exploit exists.
The vendor was contacted early about this disclosure but did not respond in any way.