CVE-2026-9349

MEDIUM

calcom cal.diy Generic React API bookings-single-view.getServerSideProps.tsx getServerSideProps information disclosure

Title source: cna

Description

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.

References (4)

Core 4

Core References

Vdb Entry, Technical Description vdb-entry technical-description

VDB-365312 | calcom cal.diy Generic React API bookings-single-view.getServerSideProps.tsx getServerSideProps information disclosure

https://vuldb.com/vuln/365312

Signature, Permissions Required signature permissions-required

VDB-365312 | CTI Indicators (IOB, IOC, TTP, IOA)

https://vuldb.com/vuln/365312/cti

Third Party Advisory third-party-advisory

Submit #812177 | cal.com <= v4.9.4 Exposure of Sensitive Information (CWE-200)

https://vuldb.com/submit/812177

Exploit exploit

https://gist.github.com/YLChen-007/b59c44d1550c4b0f373ca4eb1c150994

Scores

CVSS v3 5.3

EPSS 0.0040

EPSS Percentile 31.6%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CISA SSVC

Vulnrichment

Exploitation poc

Automatable yes

Technical Impact partial

Details

CWE

CWE-200 CWE-284

Status published

Products (5)

calcom/cal.diy 4.9.0

calcom/cal.diy 4.9.1

calcom/cal.diy 4.9.2

calcom/cal.diy 4.9.3

calcom/cal.diy 4.9.4

Published May 24, 2026

Tracked Since May 24, 2026