CVE-2026-104054

calcom cal.diy PBAC Permission BookingAccessService.ts doesUserIdHaveAccessToBooking authorization

MEDIUM
6.3
CVSS Score
Published: October 2, 2026 at 02:00 AM UTC
Updated: October 2, 2026 at 08:17 PM UTC
1 product affected across 1 vendorCal.diy

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Severity
MEDIUM6.3
Exploit prediction
EPSS 0.2%
SSVC
PoC

Description

A security flaw has been discovered in calcom cal.diy up to 6.2.0. This affects the function doesUserIdHaveAccessToBooking of the file BookingAccessService.ts of the component PBAC Permission Engine. Performing a manipulation results in missing authorization. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. The pull request to fix this issue awaits acceptance.

Affected

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

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (7)

VDB EntryTechnical Description
Source: cverecord
https://vuldb.com/vuln/412762
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/412762/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/cve/CVE-2026-104054
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/959492
ExploitIssue Tracking
Source: cverecord
https://github.com/calcom/cal.diy/issues/29802
Issue TrackingPatch
Source: cverecord
https://github.com/calcom/cal.diy/pull/30253
Product
Source: cverecord
https://github.com/calcom/cal.diy/

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

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

CVSS

6.3MEDIUMVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-862CWE-863

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