vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2026-16624

CVE-2026-16624

CRITICAL
9.6
CVSS Score
Published: July 22, 2026 at 06:31 PM UTC
Updated: October 24, 2026 at 01:10 PM UTC
1 product affected across 1 vendorCal.diy

Using Cal.diy by Cal.com?

Get instant alerts when new vulnerabilities affect Cal.diy - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
CRITICAL9.6
Exploit prediction
EPSS 0.4%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Cal.diy· Calcom
90%
0 ≤ v < 6.2.00
Affected range stops below 6.2.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

Source: cverecord
https://github.com/calcom/cal.diy/security/advisories/GHSA-4fwh-xxpv-xfm6
Source: cverecord
https://vokecyber.com/research/calcom-cross-tenant-webhook-plant

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

9.6CRITICALCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-639

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card