CVE-2026-9349

MEDIUM 5.3

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

CVSS Score

5.3

EPSS Score

0.0%

EPSS Percentile

9th

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.

CWE	CWE-200 CWE-284
Vendor	calcom
Product	cal.diy
Published	May 24, 2026
Last Updated	May 26, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

calcom / cal.diy

4.9.0 4.9.1 4.9.2 4.9.3 4.9.4

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/365312 vuldb.com: https://vuldb.com/vuln/365312/cti vuldb.com: https://vuldb.com/submit/812177 gist.github.com: https://gist.github.com/YLChen-007/b59c44d1550c4b0f373ca4eb1c150994

Credits

🔍 Eric-z (VulDB User) VulDB CNA Team