CVE-2026-104054CWE-862CWE-863broken-access-control

CVE-2026-104054

Medium · published October 2, 2026

CVSS v3.1
6.3
EPSS
0%
Percentile
10.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CVSS v4.0
5.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
EPSS
0.00209 · 10.6th percentile
Weaknesses
CWE-862 · Missing Authorization; CWE-863 · Incorrect Authorization
Published
2026-10-02T06:17Z
References (7)
https://github.com/calcom/cal.diy/ · [email protected]https://github.com/calcom/cal.diy/issues/29802 · [email protected]https://github.com/calcom/cal.diy/pull/30253 · [email protected]https://vuldb.com/cve/CVE-2026-104054 · [email protected]https://vuldb.com/submit/959492 · [email protected]https://vuldb.com/vuln/412762 · [email protected]https://vuldb.com/vuln/412762/cti · [email protected]
EPSS history
Timeline
  • 03 OCT 03:41Z
    EPSS moved — → 0%
    epss
  • 02 OCT 02:00Z
    calcom cal.diy PBAC Permission BookingAccessService.ts doesUserIdHaveAccessToBooking authorization
    cvelistv5