CVE-2026-15951 in Mailer Plugin
Summary
by MITRE • 08/01/2026
The Icegram Mailer plugin for WordPress is vulnerable to SQL Injection via the 'fields' parameter in versions up to, and including, 1.0.12. This is due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query in the Icegram_Mailer_Logs_Table::get_logs() function, where each element of the `fields` array received from $_REQUEST['data'] is joined verbatim into the SELECT clause via implode() with no whitelist, escaping, or prepared-statement placeholder. This makes it possible for authenticated attackers, with Administrator-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.
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Analysis
by VulDB Data Team • 08/01/2026
The vulnerability in the Icegram Mailer plugin for WordPress represents a critical sql injection flaw that undermines database security through improper input handling within the Icegram_Mailer_Logs_Table::get_logs() function. This weakness exists specifically in versions up to and including 1.0.12, where the plugin fails to implement proper sanitization measures for user-supplied data. The vulnerability manifests when the 'fields' parameter is processed from $_REQUEST['data'], creating an avenue for malicious exploitation that directly impacts the integrity and confidentiality of stored information.
The technical implementation of this flaw stems from inadequate parameter validation and escaping mechanisms within the sql query construction process. The plugin employs implode() to concatenate elements of the fields array directly into the SELECT clause without any form of input whitelisting, escaping, or prepared statement utilization. This approach violates fundamental security principles established by cwe-89 and aligns with attack patterns documented in the attack tree framework under the data validation and injection categories. The absence of proper sql query preparation creates a direct path for attackers to manipulate existing queries through concatenation of malicious sql fragments.
The operational impact of this vulnerability is severe, as it requires only administrator-level privileges or higher to exploit successfully. This authorization level provides attackers with extensive control over the affected wordpress installation and its underlying database infrastructure. Authenticated attackers can leverage this weakness to extract sensitive information including user credentials, personal data, plugin configurations, and potentially other system-related details stored within the database. The vulnerability's exploitation capability extends beyond simple data retrieval to include potential privilege escalation and further compromise of the wordpress environment.
Security mitigations for this vulnerability should focus on implementing proper input validation and parameterized queries throughout the affected codebase. The recommended approach involves creating a whitelist of acceptable field names that can be used in the sql query construction process, ensuring all user-supplied parameters undergo rigorous sanitization before database interaction. Additionally, transitioning from direct string concatenation to prepared statements with proper placeholder usage will eliminate the injection vector entirely. Organizations should also implement monitoring for unusual query patterns and consider privilege reduction measures for plugin administrators to limit potential damage scope. This remediation strategy aligns with nist cybersecurity framework recommendations for input validation and secure coding practices.
The vulnerability demonstrates a classic example of insufficient data sanitization that can be addressed through established security controls including proper parameter binding, input filtering, and defense-in-depth strategies. Implementation of these measures would prevent attackers from manipulating database queries through malicious input manipulation while maintaining the intended functionality of the plugin's logging features. Regular security auditing and code review processes should be implemented to identify similar vulnerabilities across the wordpress ecosystem and ensure ongoing protection against sql injection threats.