CVE-2026-86475CWE-20

CVE-2026-86475

Medium · published September 16, 2026

CVSS v3.1
5.3
EPSS
0%
Percentile
22.6
In the wild
Unconfirmed
What it is

The Appointment Hour Booking WordPress plugin before 1.5.95 does not check every appointment in a booking submission against the capacity configured for its own slot, allowing unauthenticated visitors to take slots that are already fully booked.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00310 · 22.6th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2026-09-16T11:16Z
References (1)
https://wpscan.com/vulnerability/b7b45dae-bc91-4142-ae9b-5c8b39791cda/ · [email protected]
EPSS history
Timeline
  • 17 SEP 03:33Z
    EPSS moved — → 0%
    epss
  • 16 SEP 06:30Z
    Appointment Hour Booking < 1.5.95 - Unauthenticated Booking Capacity Bypass via Multi-Appointment Submission
    cvelistv5