CVE-2026-105193CWE-326

CVE-2026-105193

Medium · published October 8, 2026

CVSS v3.1
4.8
EPSS
0%
Percentile
1.6
In the wild
Unconfirmed
What it is

The Booking Calendar WordPress plugin before 11.8 does not generate its per-booking access hashes with sufficient entropy, deriving each from a low-entropy time-seeded value, which can allow unauthenticated attackers who are able to determine a booking's creation time to predict the hash and then read that booking's personal data or modify the booking in place.

The record
Technical detail
CVSS v3.1
4.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00118 · 1.6th percentile
Weakness
CWE-326 · Inadequate Encryption Strength
Published
2026-10-08T10:16Z
References (1)
https://wpscan.com/vulnerability/c6a81cf3-095d-4d7e-83c5-80f44327e7fe/ · [email protected]
EPSS history
Timeline
  • 09 OCT 03:26Z
    EPSS moved — → 0%
    epss
  • 08 OCT 06:00Z
    Booking Calendar < 11.8 - Unauthenticated Booking Information Disclosure and Modification via Predictable Booking Hash
    cvelistv5
  • 08 OCT 06:00Z
    Booking Calendar < 11.8 - Unauthenticated Booking Information Disclosure and Modification via Predictable Booking Hash
    cvelistv5