Cal cal.com up to 6.1.x Webhook teamId authorization

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$0-$5k2.70+

Summaryinfo

A vulnerability, which was classified as critical, was found in Cal cal.com up to 6.1.x. Impacted is an unknown function of the component Webhook. The manipulation of the argument teamId results in authorization. This vulnerability was named CVE-2026-16624. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in Cal cal.com up to 6.1.x. It has been classified as critical. Affected is some unknown functionality of the component Webhook. The manipulation of the argument teamId with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-639. The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-16624 since 07/22/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Technical details are known, but there is no available exploit.

Upgrading to version 6.2.0 eliminates this vulnerability.

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Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Authorization
CWE: CWE-639 / CWE-285 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: cal.com 6.2.0

Timelineinfo

07/22/2026 Advisory disclosed
07/22/2026 +0 days CVE reserved
07/22/2026 +0 days VulDB entry created
07/22/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-16624 (🔒)
GCVE (CVE): GCVE-0-2026-16624
GCVE (VulDB): GCVE-100-382398

Entryinfo

Created: 07/22/2026 20:55
Changes: 07/22/2026 20:55 (55)
Complete: 🔍
Cache ID: 216::103

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