How severe is CVE-2022-4036?

CVE-2022-4036 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2022-4036 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-4036?

CVE-2022-4036 affects Dwbooster Appointment Hour Booking. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-4036?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2022-4036 published?

CVE-2022-4036 was published on 2022-11-29 and last updated on 2026-06-17.

CVE-2022-4036

CVE-2022-4036 is a medium-severity vulnerability in Dwbooster Appointment Hour Booking with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-804.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-804
Affected product: Dwbooster Appointment Hour Booking
Published: 2022-11-29
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2022-4036?: 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.
How severe is CVE-2022-4036?: CVE-2022-4036 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2022-4036 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-4036?: CVE-2022-4036 affects Dwbooster Appointment Hour Booking. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-4036?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-4036 published?: CVE-2022-4036 was published on 2022-11-29 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:dwbooster:appointment_hour_booking:*:*:*:*:*:wordpress:*:*

More vulnerabilities in Dwbooster Appointment Hour Booking

CVE-2022-4035 — High (CVSS 7.2): The Appointment Hour Booking plugin for WordPress is vulnerable to iFrame Injection via the ‘email’ or general…
CVE-2019-13505 — Medium (CVSS 6.1): The Appointment Hour Booking plugin 1.1.44 for WordPress allows XSS via the E-mail field, as demonstrated by email_1.
CVE-2022-4034 — Medium (CVSS 5.8): The Appointment Hour Booking Plugin for WordPress is vulnerable to CSV Injection in versions up to, and including,…
CVE-2021-24712 — Medium (CVSS 5.4): The Appointment Hour Booking WordPress plugin before 1.3.17 does not properly sanitize values used when creating new…
CVE-2022-1710 — Medium (CVSS 4.8): The Appointment Hour Booking WordPress plugin before 1.3.56 does not sanitise and escape a settings of its Calendar…
CVE-2021-24673 — Medium (CVSS 4.8): The Appointment Hour Booking WordPress plugin before 1.3.16 does not escape some of the Calendar Form settings,…

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CVE-2025-70129 — Medium (CVSS 5.3): If the anti spam-captcha functionality in PluXml versions 5.8.22 and earlier is enabled, a captcha challenge is…
CVE-2025-1262 — Medium (CVSS 5.3): The Advanced Google reCaptcha plugin for WordPress is vulnerable to CAPTCHA Bypass in versions up to, and including,…
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