calcom cal.diy up to 6.2.0 PBAC Permission Engine BookingAccessService.ts doesUserIdHaveAccessToBooking 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-$5k2.90

Summaryinfo

A vulnerability classified as critical was found in calcom cal.diy up to 6.2.0. This impacts the function doesUserIdHaveAccessToBooking of the file BookingAccessService.ts of the component PBAC Permission Engine. Executing a manipulation can lead to authorization. This vulnerability is tracked as CVE-2026-104054. The attack can be launched remotely. Moreover, an exploit is present. The pull request to fix this issue awaits acceptance.

Detailsinfo

A vulnerability has been found in calcom cal.diy up to 6.2.0 and classified as critical. This vulnerability affects the function doesUserIdHaveAccessToBooking of the file BookingAccessService.ts of the component PBAC Permission Engine. The manipulation with an unknown input leads to a authorization vulnerability. The CWE definition for the vulnerability is CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect confidentiality, integrity, and availability.

The advisory is available at github.com. This vulnerability was named CVE-2026-104054. The exploitation appears to be easy. The attack can be initiated remotely. Technical details and also a public exploit are known.

It is possible to download the exploit at github.com. It is declared as proof-of-concept. The pull request to fix this issue awaits acceptance.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

Name

Version

Website

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

Exploitinginfo

Class: Authorization
CWE: CWE-862 / CWE-863 / CWE-285
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

10/01/2026 Advisory disclosed
10/01/2026 +0 days VulDB entry created
10/01/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 29802
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2026-104054 (🔒)
GCVE (CVE): GCVE-0-2026-104054
GCVE (VulDB): GCVE-100-412762
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 10/01/2026 20:02
Changes: 10/01/2026 20:02 (59)
Complete: 🔍
Submitter: geochen
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #959492: https://github.com/calcom/ cal.diy commit 4026669 broken access control (by geochen)

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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