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CVE

CVE-2026-16624

CVE-2026-16624
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CVE

CVE-2026-16624

CVE-2026-16624

Cal.com OSS ships lacks authorization on webhook teamId creation, allowing any authenticated user to create a webhook on any team via unvalidated teamId injection, then steal booking data, including fields like organizer/attendee emails and custom responses, and conditionally video-call passwords, by triggering webhook delivery.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.6
-
3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
C
H
U
-

Related Resources

No items found.

References

https://vokecyber.com/research/calcom-cross-tenant-webhook-plant, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/16xxx/CVE-2026-16624.json, https://github.com/calcom/cal.diy/security/advisories/GHSA-4fwh-xxpv-xfm6, https://nvd.nist.gov/vuln/detail/CVE-2026-16624

Severity

9.6

CVSS Score
0
10

Basic Information

Base CVSS
9.6
EPSS Probability
0.00281%
EPSS Percentile
0.20491%
Introduced Version
0
Fix Available
1c193cca8682b33b9866c792186033f7ef886682

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