CVE-2022-4036 - CVE House
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Status published Medium CVE-2022-4036

Appointment Hour Booking <= 1.3.72 - CAPTCHA Bypass

Vulnerability Description

The Appointment Hour Booking plugin for WordPress is vulnerable to CAPTCHA bypass in versions up to, and including, 1.3.72. This is due to the use of insufficiently strong hashing algorithm on the CAPTCHA secret that is also displayed to the user via a cookie.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Luca Greeb
  • Andreas Krüger

References

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Affected Vendor

Affected Software

Appointment Hour Booking – Booking Calendar
Vulnerable Versions:
0

Timeline

Official Publish: November 29th, 2022
Last Modified: April 8th, 2026
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Weaknesses (CWE)

CWE-804

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.