CVE-2022-4036

Appointment Hour Booking <= 1.3.72 - CAPTCHA Bypass

5.3 Medium

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: Low
Integrity: None
Availability: None

Exploit likelihood

0.49%Down 0.4 points since Nov 30, 2022

What each source reports

CVE List Score used 5.3

Appointment Hour Booking <= 1.3.72 - CAPTCHA Bypass

Record: CVE-2022-4036
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-804
Updated: 2026-11-02

EUVDEUVD-2022-51415 5.3

Record: EUVD-2022-51415
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-5cwm-9hm2-r3cf 5.3

The Appointment Hour Booking plugin for WordPress is vulnerable to CAPTCHA bypass in versions up...

Record: GHSA-5cwm-9hm2-r3cf
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-326, CWE-804, CWE-863
Updated: 2026-11-02

NVD 5.3

Record: CVE-2022-4036
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-804, CWE-326
Updated: 2026-11-02

Affected products

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2022-4036 is a medium vulnerability (CVSS 5.3) in Dwbooster Appointment Hour Booking, published November 29, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.49%, the 42nd percentile. No source names a fixed version.