Repute Infosystems BookingPress Appointment Booking Pro Plugin up to 5.7.1 on WordPress bpa_assign_staffmember_to_slots wpdb sql injection

Summaryinfo

A vulnerability, which was classified as critical, has been found in Repute Infosystems BookingPress Appointment Booking Pro Plugin up to 5.7.1 on WordPress. Impacted is the function bpa_assign_staffmember_to_slots of the component Appointment Handler. Performing a manipulation of the argument wpdb results in sql injection. This vulnerability is cataloged as CVE-2026-11823. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Repute Infosystems BookingPress Appointment Booking Pro Plugin up to 5.7.1 on WordPress. It has been classified as critical. This affects the function bpa_assign_staffmember_to_slots of the component Appointment Handler. The manipulation of the argument wpdb with an unknown input leads to a sql injection vulnerability. CWE is classifying the issue as CWE-89. The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The BookingPress Appointment Booking Pro plugin for WordPress is vulnerable to SQL Injection via the 'store_service_date' parameter of the bpa_assign_staffmember_to_slots() function in versions up to and including 5.7.1. This is due to the explicit use of stripslashes_deep() on user-supplied POST data before it is interpolated verbatim into a SQL LIKE clause without use of $wpdb->prepare() or any parameterization. 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.

The weakness was shared by h0xilo. The advisory is shared at wordfence.com. This vulnerability is uniquely identified as CVE-2026-11823 since 06/09/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/01/2026). MITRE ATT&CK project uses the attack technique T1505 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-40912). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Appointment Software

Vendor

• Repute Infosystems

Name

• BookingPress Appointment Booking Pro Plugin

Version

• 5.7.0
• 5.7.1

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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