CVE-2026-32358 in Booking Calendar Plugin
Summary
by MITRE • 03/13/2026
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in wpdevelop Booking Calendar booking allows Blind SQL Injection.This issue affects Booking Calendar: from n/a through <= 10.14.15.
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Analysis
by VulDB Data Team • 03/20/2026
The vulnerability identified as CVE-2026-32358 represents a critical SQL injection flaw within the wpdevelop Booking Calendar plugin that exposes systems to blind SQL injection attacks. This vulnerability resides in the plugin's handling of user-supplied input within SQL command constructions, specifically affecting versions ranging from the initial release through version 10.14.15. The improper neutralization of special elements used in SQL commands creates a pathway for malicious actors to manipulate database queries through crafted input parameters.
The technical implementation of this vulnerability stems from insufficient input validation and sanitization within the booking calendar plugin's database interaction mechanisms. When users submit booking requests or access certain calendar functionalities, the plugin incorporates user-provided data directly into SQL queries without adequate escaping or parameterization. This allows attackers to inject malicious SQL fragments that can be executed within the database context, potentially enabling unauthorized data access, modification, or deletion operations.
From an operational perspective, this vulnerability poses significant risks to organizations relying on the Booking Calendar plugin for reservation management systems. The blind SQL injection nature means attackers cannot directly observe database results through error messages, but can infer information through response timing variations or conditional execution paths. This makes the vulnerability particularly dangerous as it can be exploited to extract sensitive information such as user credentials, booking details, customer data, and potentially system configuration information. The impact extends beyond immediate data compromise to include potential system escalation and persistent access.
Security practitioners should note this vulnerability aligns with CWE-89, which specifically addresses improper neutralization of special elements used in SQL commands. The ATT&CK framework categorizes this as a database injection technique under the broader category of SQL injection attacks, with potential lateral movement capabilities once initial access is achieved. Organizations should prioritize immediate remediation through plugin updates to versions beyond 10.14.15, while implementing additional defensive measures such as web application firewalls, input validation controls, and database access monitoring. The vulnerability demonstrates the critical importance of proper input sanitization and parameterized queries in preventing database-related attacks, particularly in web applications handling sensitive user information through calendar and booking functionalities.