CVE-2026-16624
CVE-2026-16624
Description
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.
INFO
Published Date :
July 22, 2026, 7:16 p.m.
Last Modified :
July 22, 2026, 7:16 p.m.
Remotely Exploit :
No
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-16624
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Implement strict authorization for webhook creation.
- Validate all provided team IDs.
- Review and secure webhook data access.
- Apply necessary security patches.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-16624.
| URL | Resource |
|---|---|
| https://github.com/calcom/cal.diy/security/advisories/GHSA-4fwh-xxpv-xfm6 | |
| https://vokecyber.com/research/calcom-cross-tenant-webhook-plant |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-16624 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-16624
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-16624 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-16624 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Jul. 22, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Cal.com', 'product': 'Cal.diy', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '6.2.0', 'versionType': 'custom'}]}] Added Description 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. Added Reference https://github.com/calcom/cal.diy/security/advisories/GHSA-4fwh-xxpv-xfm6 Added Reference https://vokecyber.com/research/calcom-cross-tenant-webhook-plant