CVE-2026-103695 in Mobile builder Plugin
Summary
by MITRE • 10/11/2026
The Mobile builder WordPress plugin through 1.4.2 does not sanitise and escape a parameter before using it in a SQL statement, allowing unauthenticated users to perform SQL injection attacks.
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Analysis
by VulDB Data Team • 10/11/2026
The vulnerability identified within the Mobile Builder WordPress plugin versions up to 1.4.2 represents a critical security flaw rooted in insufficient input validation and output encoding mechanisms. Specifically, the application fails to properly sanitize or escape user-supplied parameters prior to their incorporation into SQL query structures. This architectural oversight creates a direct pathway for unauthenticated attackers to manipulate database queries by injecting malicious SQL code through standard HTTP requests. The absence of rigorous data handling protocols means that any input field accessible via the plugin's interface can serve as an injection vector, bypassing authentication requirements entirely due to the nature of how certain endpoints are configured or exposed within the WordPress ecosystem.
From a technical perspective, this flaw aligns with Common Weakness Enumeration identifier CWE-89, which classifies Improper Neutralization of Special Elements used in an SQL Command. The core issue lies in the developer's failure to utilize prepared statements or parameterized queries, nor did they apply appropriate escaping functions such as those provided by the WordPress database API like $wpdb->prepare(). Instead, raw user input is concatenated directly into the query string. This allows attackers to terminate the intended logical flow of the SQL statement and append arbitrary commands that interact with the underlying MySQL or MariaDB server. The lack of sanitization means that special characters, which are critical for breaking out of context in a SQL command, remain unaltered and executable by the database engine.
The operational impact of this vulnerability is severe, potentially leading to full system compromise depending on the privileges granted to the database user account running the WordPress instance. An attacker can exploit this flaw to extract sensitive data from the database, including administrator usernames and password hashes, which facilitates further credential-based attacks. Beyond data exfiltration, the vulnerability allows for unauthorized modification or deletion of site content, undermining data integrity. In more advanced scenarios, if the database user has file system privileges, an attacker might leverage SQL injection techniques such as UNION SELECT to write files to the server's disk, effectively achieving remote code execution and gaining persistent access to the web application infrastructure.
This type of vulnerability is frequently associated with automated scanning activities found in threat intelligence feeds targeting WordPress plugins due to their widespread deployment and frequent occurrence of coding errors. It maps directly to MITRE ATT&CK technique T1190, which describes Exploit Public-Facing Application attacks. The unauthenticated nature of the exploit lowers the barrier for entry significantly, allowing low-skilled attackers or automated bots to compromise systems without needing valid credentials. This broadens the attack surface considerably compared to authenticated injection flaws, as any visitor with network access can attempt exploitation.
Mitigation strategies must focus on immediate remediation and long-term secure coding practices. The most effective solution is for plugin developers to update the affected version immediately if a patched release is available from the official repository. For administrators unable to patch instantly, implementing Web Application Firewall rules that detect common SQL injection patterns in HTTP requests can provide temporary protection by blocking malicious payloads before they reach the application logic. Furthermore, enforcing principle of least privilege on database accounts ensures that even if an injection succeeds, the potential damage is contained within a limited scope. Developers must adopt parameterized queries as the standard for all database interactions and implement strict input validation to ensure only expected data types are processed, thereby eliminating the root cause of such vulnerabilities in future iterations.