CVE-2026-96330 in Opt-In Builder Plugin
Summary
by MITRE • 10/09/2026
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in tagDiv tagDiv Opt-In Builder td-subscription allows Blind SQL Injection.This issue affects tagDiv Opt-In Builder: from n/a through 1.7.6.
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Analysis
by VulDB Data Team • 10/09/2026
The identified security flaw represents a classic instance of improper neutralization of special elements used within an SQL command, commonly categorized under the CWE-89 identifier for SQL injection vulnerabilities. This specific vulnerability resides in the tagDiv Opt-In Builder plugin, particularly affecting versions ranging from n/a through 1.7.6. The core technical deficiency lies in the application's failure to adequately sanitize or parameterize user-supplied input before incorporating it into backend database queries. When an attacker submits maliciously crafted data via the td-subscription component, the web server processes this input without sufficient validation, allowing the injected SQL syntax to be interpreted as executable code by the underlying database management system rather than being treated strictly as data.
This particular implementation manifests as a blind SQL injection vector, which distinguishes it from error-based or union-based variants in terms of exploitation methodology and observable outcomes. In a blind scenario, the application does not return direct query results to the user interface, nor does it typically display database error messages that would reveal structural details immediately. Instead, the attacker must infer information about the database schema by observing subtle differences in the application's behavior or response times based on boolean conditions or time delays embedded within the injected payload. This technique requires a more sophisticated and patient approach to exploitation but remains highly effective for extracting sensitive data such as administrative credentials, user emails, and other proprietary content stored within the WordPress database.
The operational impact of this vulnerability is severe due to the potential for complete compromise of the targeted web application environment. An authenticated or unauthenticated attacker, depending on the specific access controls surrounding the td-subscription feature, can manipulate backend data structures, leading to unauthorized disclosure of confidential information. Beyond simple data theft, the ability to execute arbitrary SQL commands may allow for further lateral movement within the network infrastructure if database credentials possess elevated privileges. This could result in defacement, integrity loss where records are altered or deleted, and potentially full system takeover if the database server allows interaction with operating system-level functions through specific extensions like xp_cmdshell on Microsoft SQL Server environments.
From a threat intelligence perspective, this vulnerability aligns closely with MITRE ATT&CK techniques related to Collection via Input Capture for initial data exfiltration and Command and Control channels that might be established using injected scripts if the database permits file writes or network connections. The lack of proper input validation in version 1.7.6 and earlier indicates a gap in secure coding practices during the development lifecycle, specifically regarding the handling of dynamic query construction. Organizations relying on this plugin are exposed to significant risk until remediation is applied, as automated scanning tools frequently target known vulnerable versions for exploitation campaigns aimed at credential harvesting or ransomware deployment via database manipulation.
Mitigation strategies must prioritize immediate patching by upgrading tagDiv Opt-In Builder to a version later than 1.7.6 where the vendor has implemented proper input sanitization and prepared statement usage. In scenarios where updating is not immediately feasible, administrators should consider disabling the td-subscription feature if it is not actively required for business operations, thereby removing the attack surface entirely. Additionally, deploying Web Application Firewalls with rulesets tuned to detect SQL injection patterns can provide a layer of defense by blocking malicious payloads before they reach the application logic. Regular security audits and static code analysis should be integrated into the development pipeline to prevent similar flaws from being introduced in future releases, ensuring that all user inputs are strictly validated against expected formats and types before processing.