PT-2026-42905 · Cal.Com · Cal.Diy

Eric-Z · Published 2026-05-24 · Updated 2026-05-24 · CVE-2026-9349

Mitre

CVSS v3.1

5.3

Medium

Base vector

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

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.

Exploit

Improper Access Control

Information Disclosure

Weakness Enumeration

CWE-284

CWE-200

Related Identifiers

CVE-2026-9349

Affected Products

Cal.Diy

References · 4

• 🔥 https://gist.github.com/YLChen-007/b59c44d1550c4b0f373ca4eb1c150994 · Exploit
• https://vuldb.com/submit/812177 · Note
• https://vuldb.com/vuln/365312 · Note
• https://vuldb.com/vuln/365312/cti · Note