Description

SQL injection in the RelatedProduct block in Mageplaza Blog for Magento 2 (mageplaza/magento-2-blog-extension) through 4.3.2 allows remote unauthenticated attackers to execute arbitrary SQL commands and read arbitrary database contents via the id parameter to /mpblog/post/view.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "8.6",
  "pubDate": "2026-09-09T19:17:47.900Z",
  "pubdate": "2026-09-09T19:17:47.900Z",
  "executiveSummary": "A critical SQL injection vulnerability exists in the RelatedProduct block within the Mageplaza Blog extension for Magento 2, affecting versions up to 4.3.2. This vulnerability allows remote, unauthenticated attackers to execute arbitrary SQL commands against the underlying database.\nThe flaw stems from improper input sanitization of the 'id' parameter processed by the /mpblog/post/view endpoint. By injecting malicious SQL payloads, an attacker can bypass standard security controls, perform unauthorized data exfiltration, modify database records, or potentially gain full control over the application's data layer.\nGiven that the exploit does not require authentication, the risk to the confidentiality, integrity, and availability of the store's data is significant. Organizations utilizing this extension are exposed to data breach risks, including the exposure of sensitive customer information, administrative credentials, or configuration details stored within the Magento database. Prompt remediation is critical to prevent exploitation by malicious actors scanning for known vulnerabilities in common e-commerce extensions.",
  "technicalDetails": "The vulnerability is located in the RelatedProduct block of the Mageplaza Blog extension (mageplaza/magento-2-blog-extension), specifically within the request handling logic for the /mpblog/post/view route. The application fails to adequately sanitize the 'id' parameter before incorporating it into database queries, allowing for the manipulation of the SQL syntax.\nExploitation is achieved through the injection of malicious SQL strings into the 'id' parameter. When the application processes the request, the unvalidated input is concatenated into a database query. Because the application fails to utilize parameter binding or prepared statements, the injected SQL code is executed with the privileges of the database user configured for the Magento application.\nThe attack flow proceeds as follows: First, the attacker identifies the /mpblog/post/view endpoint and observes that the 'id' parameter is directly involved in fetching data related to the blog post. Second, the attacker crafts a payload designed to break out of the intended query context—often using union-based or boolean-based blind SQL injection techniques. Third, the attacker sends an HTTP GET request containing the malicious payload via the 'id' parameter. Fourth, the server-side code executes the tainted query against the database, returning the results of the attacker's query in the HTTP response or altering the state of the database accordingly.\nThe vulnerable component is the controller or block responsible for the RelatedProduct functionality. Versions up to 4.3.2 are confirmed to be susceptible to this flaw. Since the exploitation occurs at the web interface level, no prior authentication or administrative privileges are required to initiate the attack. This increases the attack surface significantly, as the endpoint is exposed to the public internet.\nThe post-exploitation impact includes unauthorized access to sensitive data stored in tables such as customer_entity, sales_order, and admin_user. Furthermore, an attacker may leverage this access to escalate privileges, dump database contents, or perform unauthorized administrative actions, depending on the database user's permissions and the capabilities of the database management system. The lack of input validation at the entry point represents a fundamental failure in implementing secure coding practices such as the use of the Magento framework's built-in DB abstraction layer and parameter binding mechanisms."
}