CVE-2026-124265 in Newsletters Plugin
Summary
by MITRE • 11/13/2026
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Tribulant Software Newsletters newsletters-lite allows Blind SQL Injection.This issue affects Newsletters: from n/a through 4.18.1.
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Analysis
by VulDB Data Team • 11/13/2026
The identified security flaw represents a classic instance of Improper Neutralization of Special Elements used in an SQL Command, commonly categorized under CWE-89 within the Common Weakness Enumeration framework. This vulnerability specifically manifests as a Blind SQL Injection attack vector within the Tribulant Software Newsletters plugin for WordPress, affecting versions ranging from n/a through 4.18.1. In this context, the application fails to adequately sanitize or validate user-supplied input before incorporating it into backend database queries. Unlike traditional SQL injection which may return error messages or data directly in the HTTP response, a blind variant relies on observing changes in application behavior or timing differences to infer information about the underlying database structure and contents. This makes detection by automated scanners more difficult but does not diminish the severity of the potential impact.
The technical root cause lies in the insufficient handling of input parameters within the newsletter management functionality. When an attacker constructs a malicious payload designed to alter SQL logic, the application processes this input without proper escaping or parameterization. Because the vulnerability is blind, the exploitation process involves sending carefully crafted queries that trigger boolean-based conditions or time delays based on whether specific database statements evaluate as true or false. By analyzing these subtle responses, such as slight variations in page load times or differences in HTTP status codes and body content, an attacker can systematically extract sensitive data from the database one bit at a time. This method allows for the extraction of usernames, password hashes, configuration details, and other critical information stored within the WordPress installation's database without ever seeing the direct output of the injected query.
The operational impact of this vulnerability is severe, particularly given the widespread use of WordPress as a content management system. Successful exploitation can lead to unauthorized access to sensitive administrative data, including user credentials that may be reused across multiple services due to poor password hygiene practices common in web environments. Furthermore, attackers could potentially modify or delete newsletter subscriber lists, compromising privacy regulations such as GDPR if personal email addresses and associated metadata are exfiltrated. In more advanced attack chains, this initial foothold can serve as a pivot point for further compromise of the hosting environment, especially if database credentials have overly broad privileges that extend beyond the application's specific needs. The ability to execute arbitrary SQL commands effectively grants an attacker control over the data layer, which is often considered one of the most critical assets in any web application architecture.
Mitigation strategies must prioritize immediate remediation through software updates and defensive coding practices. Administrators should upgrade the Tribulant Software Newsletters plugin to version 4.18.2 or later, where this vulnerability has been addressed by implementing proper input validation and prepared statements for all database interactions. In scenarios where updating is not immediately feasible, deploying a Web Application Firewall can provide an additional layer of defense by filtering out known malicious SQL injection patterns in HTTP requests. Additionally, enforcing the principle of least privilege on the database user account used by the WordPress application limits the potential damage if exploitation occurs. Regular security audits and code reviews focusing on data handling routines are essential to prevent similar flaws from being introduced during future development cycles. Aligning these practices with OWASP guidelines ensures a robust defense against injection-based attacks that remain among the most prevalent threats in web applications today.