CVE-2026-42717 in Leyka Plugin
Summary
by MITRE • 10/10/2026
Administrator SQL Injection in Leyka <= 3.32.3 versions.
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Analysis
by VulDB Data Team • 10/11/2026
The vulnerability identified as an administrator-level SQL injection within the Leyka plugin for WordPress, affecting versions up to and including 3.32.3, represents a critical security flaw that compromises the integrity of the underlying database management system. This specific type of vulnerability arises from improper validation or sanitization of user-supplied input before it is incorporated into dynamic SQL queries executed by the application backend. In this context, the attack vector targets functionality accessible to authenticated administrators, which significantly elevates the severity due to the high privileges associated with such accounts. The flaw allows an attacker who has obtained administrative credentials through phishing, credential stuffing, or other means of account compromise to inject malicious SQL code into input fields that are processed by the application's database interaction layer.
From a technical perspective, the root cause lies in the failure to properly escape special characters within user inputs such as search parameters, filter options, or configuration settings managed via the administrative dashboard. When these unsanitized values are concatenated directly into SQL statements without adequate parameterization or prepared statement usage, the database engine interprets the injected code as part of the query logic rather than data. This deviation from secure coding practices enables an attacker to manipulate the structure of the SQL command, potentially bypassing authentication checks, extracting sensitive information such as user credentials and personal data stored in the WordPress database, modifying existing records, or even executing administrative commands on the underlying server depending on the database configuration and privileges granted to the web application's database user.
The operational impact of this vulnerability is severe, particularly because it requires administrator-level access for exploitation. While many SQL injection vulnerabilities can be exploited by unauthenticated attackers through public-facing forms, this specific instance necessitates that an attacker first compromises or gains control of an administrative account. Once achieved, the ability to perform arbitrary SQL queries allows for comprehensive data exfiltration, including plaintext passwords if they are not properly hashed and salted, session tokens, and other sensitive organizational information stored within the WordPress database. Furthermore, depending on the specific capabilities enabled in the MySQL configuration such as FILE privilege or xp_cmdshell equivalents in other databases, an attacker might escalate their access to achieve remote code execution on the hosting server, thereby gaining full control over the web application environment and potentially pivoting to attack internal network resources.
This vulnerability aligns with CWE-89 Improper Neutralization of Special Elements used in an SQL Command, which is widely recognized as one of the most dangerous software defects due to its potential for widespread data compromise. In terms of offensive security frameworks, this exploitation technique corresponds to ATT&CK techniques related to Database Credential Dumping and potentially Data Exfiltration over Alternative Protocol if combined with other post-exploitation activities. The reliance on administrative privileges places it within the context of privilege escalation scenarios where initial access is gained through social engineering or weak credential management rather than direct technical exploitation of a public-facing flaw, highlighting the importance of robust identity and access management practices alongside secure coding standards.
Mitigation strategies must focus primarily on immediate patching to version 3.32.4 or later, which addresses this specific input validation deficiency by implementing proper parameterized queries or prepared statements for all database interactions involving user-supplied data. In addition to updating the software, organizations should enforce strict multi-factor authentication for all administrative accounts to reduce the risk of credential compromise that serves as a prerequisite for exploiting this vulnerability. Database users running web applications should adhere to the principle of least privilege, ensuring they do not possess elevated permissions such as FILE or SUPER unless absolutely necessary and strictly controlled. Regular security audits and static code analysis tools configured to detect SQL injection patterns can help identify similar vulnerabilities in custom plugins or themes before deployment, thereby strengthening the overall defense-in-depth posture against database-centric attacks.