HomeWordPress vulnerabilitiesAppointment Hour Booking
Appointment Hour Booking vulnerabilities
Appointment Hour Booking has 12 known vulnerabilities in this database. The most recent published record is dated 1 Oct 2026.
- Known vulnerabilities
- 12
- Active installs
- 10,000+
- Latest version
- 1.5.98
- Last updated
- 29 Sep 2026
- Most recent
- 1 Oct 2026
Find it in your WordPress dashboard under Plugins. Severity is based on the CVSS score published with the CVE where one is available.
| Vulnerability | Severity | Affected | Fix | Published |
|---|---|---|---|---|
| Cross-site scripting (XSS) CVE-2026-96573 | High 7.2 | Up to 1.5.97 | Fixed in a later version (latest 1.5.98) | 6 d ago |
| Security weakness CVE-2026-86475 | Medium 5.3 | Before 1.5.95 | Fixed in 1.5.95 | 16 Sep 2026 |
| Authentication bypass CVE-2026-16282 | Medium 5.3 | Before 1.5.88 | Fixed in 1.5.88 | 8 Aug 2026 |
| Cross-site scripting (XSS) CVE-2026-1083 | Medium 4.4 | Up to 1.5.60 | Fixed in a later version (latest 1.5.98) | 28 Jan 2026 |
| CSV injection CVE-2022-4034 | Medium 5.8 | Up to 1.3.72 | Fixed in a later version (latest 1.5.98) | 29 Nov 2022 |
| Cross-site scripting (XSS) CVE-2022-4035 | High 7.2 | Up to 1.3.72 | Fixed in a later version (latest 1.5.98) | 29 Nov 2022 |
| Security weakness CVE-2022-4036 | Medium 5.3 | Up to 1.3.72 | Fixed in a later version (latest 1.5.98) | 29 Nov 2022 |
| Broken access control CVE-2022-41692 | Medium 4.3 | Before 1.3.72 | Fixed in 1.3.72 | 18 Nov 2022 |
| Cross-site scripting (XSS) CVE-2022-1710 | Medium 4.8 | Before 1.3.56 | Fixed in 1.3.56 | 13 Jun 2022 |
| Cross-site scripting (XSS) CVE-2021-24712 | Medium 5.4 | Before 1.3.17 | Fixed in 1.3.17 | 11 Oct 2021 |
| Cross-site scripting (XSS) CVE-2021-24673 | Medium 4.8 | Before 1.3.16 | Fixed in 1.3.16 | 4 Oct 2021 |
| Cross-site scripting (XSS) CVE-2019-13505 | Medium 6.1 | Not yet published | Check for an update | 11 Jul 2019 |
Read the published descriptions
- CVE-2026-96573, 1 Oct 2026
- The Appointment Hour Booking - Booking Calendar plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via Booking Form Single-Line Field via Schedule Calendar List Renderer in all versions up to, and including, 1.5.97 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires the 'list_readmore_numberofwords' Other Parameters setting to be configured with a positive integer value; the default value of 0 bypasses the decode-and-truncate branch entirely and is not exploitable through this sink. CVE record
- CVE-2026-86475, 16 Sep 2026
- 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. CVE record
- CVE-2026-16282, 8 Aug 2026
- The Appointment Hour Booking WordPress plugin before 1.5.88 does not validate a client-supplied booking price against the server-side configured service price, allowing unauthenticated users to submit an arbitrary final price (including zero or negative) that is stored as the authoritative booking price, corrupting booking and payment records. CVE record
- CVE-2026-1083, 28 Jan 2026
- The Appointment Hour Booking - Booking Calendar plugin for WordPress is vulnerable to Stored Cross-Site Scripting via form field configuration parameters in all versions up to, and including, 1.5.60 due to insufficient input sanitization and output escaping on the 'Min length/characters' and 'Max length/characters' field configuration values. This makes it possible for authenticated attackers, with administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses the form builder interface. This only affects multi-site installations and installations where unfiltered_html has been disabled. CVE record
- CVE-2022-4034, 29 Nov 2022
- The Appointment Hour Booking Plugin for WordPress is vulnerable to CSV Injection in versions up to, and including, 1.3.72. This makes it possible for unauthenticated attackers to embed untrusted input into content during booking creation that may be exported as a CSV file when a site's administrator exports booking details. This can result in code execution when these files are downloaded and opened on a local system with a vulnerable configuration. CVE record
- CVE-2022-4035, 29 Nov 2022
- The Appointment Hour Booking plugin for WordPress is vulnerable to iFrame Injection via the ‘email’ or general field parameters in versions up to, and including, 1.3.72 due to insufficient input sanitization and output escaping that makes injecting iFrame tags possible. This makes it possible for unauthenticated attackers to inject iFrames when submitting a booking that will execute whenever a user accesses the injected booking details page. CVE record
- CVE-2022-4036, 29 Nov 2022
- 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. CVE record
- CVE-2022-41692, 18 Nov 2022
- Missing Authorization vulnerability in Appointment Hour Booking plugin <= 1.3.71 on WordPress. CVE record
- CVE-2022-1710, 13 Jun 2022
- The Appointment Hour Booking WordPress plugin before 1.3.56 does not sanitise and escape a settings of its Calendar fields, which could allow high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html is disallowed. CVE record
- CVE-2021-24712, 11 Oct 2021
- The Appointment Hour Booking WordPress plugin before 1.3.17 does not properly sanitize values used when creating new calendars. CVE record
- CVE-2021-24673, 4 Oct 2021
- The Appointment Hour Booking WordPress plugin before 1.3.16 does not escape some of the Calendar Form settings, allowing high privilege users to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed. CVE record
- CVE-2019-13505, 11 Jul 2019
- The Appointment Hour Booking plugin 1.1.44 for WordPress allows XSS via the E-mail field, as demonstrated by email_1. CVE record
What to do if you run Appointment Hour Booking
If you run Appointment Hour Booking, open WordPress and check the installed version in Plugins. Compare it with the affected versions in the vulnerability record. If a fixed version is available, take a current backup and update to that version or the latest supported release.
If no fixed version exists, consider disabling and removing the plugin or replacing it with a maintained alternative. After dealing with the affected software, check administrator users, unexpected file changes, redirects, unfamiliar pages and security logs for signs that the site may already have been altered.
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