Reported vulnerability

Online Scheduling and Appointment Booking System <= 27.7 - Unauthenticated SQL Injection

Q: Which versions of Online Scheduling and Appointment Booking System – Bookly are affected?

Wordfence lists these affected versions: Start version unspecified, through 27.7. Use the version checker above to compare your installed release with this report.

Q: Is a fix available for Online Scheduling and Appointment Booking System – Bookly?

Wordfence reports a fix for this issue in Online Scheduling and Appointment Booking System – Bookly. It lists these fixed versions: 27.8. Back up your website and test the recommended update before applying it to your live site.

Q: Where can I find my installed plugin version?

In WordPress, open Plugins > Installed Plugins and find the version shown beneath the plugin name.

Published 27 Jul 2026

Updated 17 Aug 2026

CVE-2026-14516

Compare your installed software with the affected versions below. Follow the source’s remediation guidance and test an available update after taking a backup. A database entry describes a reported issue; it does not establish whether a particular website has been compromised.

Does this affect my version?

Check your installed version against this advisory. This compares the report’s version ranges and does not scan your website.

Wordfence advisory

high · CVSS 7.5

The Online Scheduling and Appointment Booking System – Bookly plugin for WordPress is vulnerable to time-based SQL Injection via the 'staff_ids' parameter in all versions up to, and including, 27.7 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. Exploitation requires a two-request chain: an attacker first calls the unauthenticated bookly_get_form_id action to seed a booking session carrying malicious staff_ids values, then triggers bookly_render_time to cause the tainted array to reach the vulnerable query; CSRF/nonce validation is absent on both endpoints, meaning this chain can be initiated cross-site.

Severity vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Online Scheduling and Appointment Booking System – Bookly

Software: plugin · bookly-responsive-appointment-booking-tool
Affected versions: Start version unspecified, through 27.7
Fix availability: Fix available
Fixed versions: 27.8

Recommended action

Update to version 27.8, or a newer patched version

Further references (1)

wordfence.com/threat-intel/vulnerabilities/id/5c55abc7-b09d-4fea-bc2f-b903d3da119f?source=api-prod

Data sources and licences

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CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

Read licence terms

Source: Wordfence

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Questions about this vulnerability

Which versions of Online Scheduling and Appointment Booking System – Bookly are affected?

Wordfence lists these affected versions: Start version unspecified, through 27.7. Use the version checker above to compare your installed release with this report.

Is a fix available for Online Scheduling and Appointment Booking System – Bookly?

Wordfence reports a fix for this issue in Online Scheduling and Appointment Booking System – Bookly. It lists these fixed versions: 27.8. Back up your website and test the recommended update before applying it to your live site.

Where can I find my installed plugin version?

In WordPress, open Plugins > Installed Plugins and find the version shown beneath the plugin name.

Does an affected version mean my website has been hacked?

An affected version means the installed release matches a vulnerability described in this report. It does not show whether anyone has exploited it on your website. The checker compares version numbers with stored reports; it does not inspect your website.

These reports cover at least one of the same plugins, themes or WordPress core. Check each report’s affected versions separately.

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