EUVD-2026-31561
GHSA-23fj-h8hh-93x3
CVSS VectorNVD
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
2DescriptionNVD
A vulnerability was determined 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. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.
AnalysisAI
Information disclosure in Cal.com cal.diy up to version 4.9.4 allows remote unauthenticated attackers to access sensitive booking data through manipulation of cancelledBy/rescheduledBy parameters in the bookings single view API endpoint. The vulnerability affects the Generic React API's getServerSideProps function, enabling unauthorized retrieval of booking-related information. …
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External POC / Exploit Code
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