CVE-2026-104054: Missing Authorization in calcom cal.diy
CVE-2026-104054 is a medium severity vulnerability in calcom cal.diy up to version 6.2.0. It involves missing authorization in the function doesUserIdHaveAccessToBooking within the PBAC Permission Engine component. This flaw allows remote attackers to bypass access controls. An exploit has been publicly released, but the fix is pending acceptance in a pull request.
AI Analysis
Technical Summary
This vulnerability affects calcom cal.diy versions 6.0, 6.1, and 6.2.0. The issue lies in the BookingAccessService.ts file, specifically in the doesUserIdHaveAccessToBooking function of the PBAC Permission Engine component. Due to missing authorization checks, an attacker can remotely manipulate the function to gain unauthorized access. Although an exploit is publicly available, the patch has not yet been merged or officially released.
Potential Impact
The vulnerability allows remote attackers to bypass authorization controls, potentially granting unauthorized access to booking-related functionality. This could lead to unauthorized data access or manipulation within the affected component. The CVSS 4.0 score is 5.3 (medium severity), indicating a moderate impact with low attack complexity and no user interaction required.
Mitigation Recommendations
A fix is not yet officially released; a pull request addressing the issue is awaiting acceptance. Until the patch is merged and released, users should monitor the vendor's repository or advisory for updates. No official workaround or temporary fix is currently documented.
CVE-2026-104054: Missing Authorization in calcom cal.diy
Description
CVE-2026-104054 is a medium severity vulnerability in calcom cal.diy up to version 6.2.0. It involves missing authorization in the function doesUserIdHaveAccessToBooking within the PBAC Permission Engine component. This flaw allows remote attackers to bypass access controls. An exploit has been publicly released, but the fix is pending acceptance in a pull request.
CVSS v4.0
Score 5.3medium
Affected software
calcom
cal.diy
pkg:github/calcom/cal.diycpe:2.3:a:calcom:cal.diy:*:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects calcom cal.diy versions 6.0, 6.1, and 6.2.0. The issue lies in the BookingAccessService.ts file, specifically in the doesUserIdHaveAccessToBooking function of the PBAC Permission Engine component. Due to missing authorization checks, an attacker can remotely manipulate the function to gain unauthorized access. Although an exploit is publicly available, the patch has not yet been merged or officially released.
Potential Impact
The vulnerability allows remote attackers to bypass authorization controls, potentially granting unauthorized access to booking-related functionality. This could lead to unauthorized data access or manipulation within the affected component. The CVSS 4.0 score is 5.3 (medium severity), indicating a moderate impact with low attack complexity and no user interaction required.
Mitigation Recommendations
A fix is not yet officially released; a pull request addressing the issue is awaiting acceptance. Until the patch is merged and released, users should monitor the vendor's repository or advisory for updates. No official workaround or temporary fix is currently documented.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-10-01T17:57:14.224Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6abf1404a43b0b3b895de271
Added to database: 10/02/2026, 02:16:36 UTC
Last enriched: 10/02/2026, 02:31:01 UTC
Last updated: 10/02/2026, 03:19:01 UTC
Views: 6
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