CVE-2026-73355 in Affiliates Manager Plugin
Summary
by MITRE • 08/18/2026
Unauthenticated SQL Injection in Affiliates Manager <= 2.9.53 versions.
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Analysis
by VulDB Data Team • 08/18/2026
The vulnerability identified as an unauthenticated SQL injection within the Affiliates Manager plugin, specifically affecting versions up to and including 2.9.53, represents a critical security flaw that compromises the integrity of the underlying database infrastructure. This type of vulnerability arises when software applications fail to properly validate or sanitize user-supplied input before incorporating it into dynamic SQL queries executed against a backend database management system. In this specific instance, the lack of authentication required for exploitation means that any remote actor on the internet can initiate an attack without needing valid credentials, significantly lowering the barrier to entry for malicious actors and increasing the likelihood of successful compromise.
From a technical perspective, the flaw typically stems from improper handling of parameters passed through HTTP requests, such as GET or POST variables, which are directly concatenated into SQL statements without adequate escaping or parameterization. This allows an attacker to inject arbitrary SQL code that alters the logic of the original query. By manipulating these inputs, an adversary can bypass intended access controls, extract sensitive data from database tables, modify existing records, or even execute administrative operations depending on the privileges assigned to the database user account running the web application. The absence of input validation mechanisms is a classic example of CWE-89, which categorizes improper neutralization of special elements used in an SQL command, commonly known as SQL Injection.
The operational impact of this vulnerability is severe and multifaceted. Successful exploitation can lead to unauthorized access to confidential information stored within the WordPress database, including user credentials, personal data associated with affiliate accounts, transaction histories, and potentially administrative configuration settings. Beyond data exfiltration, an attacker could use the injection point to perform write operations, such as inserting malicious scripts or backdoors into the system, thereby establishing persistent access for future exploitation. This aligns with several techniques documented in the MITRE ATT&CK framework, particularly those related to Collection and Credential Access, where attackers leverage database vulnerabilities to gather intelligence that facilitates further lateral movement within a compromised network environment.
Mitigation strategies must be implemented immediately to address this risk. The primary remediation step is to upgrade the Affiliates Manager plugin to version 2.9.54 or later, where the developers have presumably patched the input validation logic and ensured proper use of prepared statements or parameterized queries to handle database interactions securely. In cases where immediate patching is not feasible due to compatibility constraints with other plugins or themes, temporary mitigations should be considered. These may include implementing a Web Application Firewall (WAF) rule set designed to detect and block common SQL injection patterns in HTTP requests, restricting direct access to the WordPress installation from untrusted IP addresses, or disabling specific endpoints that are known to trigger the vulnerability until an update can be applied. Regular security audits and adherence to secure coding standards are essential for preventing similar vulnerabilities in future updates.