Executive Summary

CVE-2025-56316 is a SQL injection vulnerability in the content_title parameter of the /cms/content/list endpoint in MCMS 5.5.0. It occurs because the system uses FreeMarker template rendering to construct raw SQL queries with unsanitized user input, allowing remote attackers to inject arbitrary SQL commands. This can lead to unauthorized database queries and manipulation. [2]

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Impact Analysis

This vulnerability can allow attackers to escalate privileges and execute remote code. They can create or modify administrator accounts without authentication by injecting stacked SQL queries. If the database user has high privileges, attackers can write files to the system (e.g., cron jobs or User-Defined Functions), potentially leading to full system compromise such as spawning reverse shells. [2]

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Detection Guidance

Detection can involve monitoring for suspicious SQL queries that include stacked queries or MySQL-specific constructs such as REPLACE INTO or INTO DUMPFILE in requests to the /cms/content/list endpoint, especially in the content_title parameter. Network or application logs can be searched for these patterns. For example, using grep on web server logs: grep -iE "REPLACE INTO|INTO DUMPFILE|/\!50000select/" /path/to/access.log. Additionally, inspecting database query logs for unusual stacked queries or unexpected file write commands can help detect exploitation attempts. [2]

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Mitigation Strategies

Immediate mitigation steps include upgrading MCMS to version 6.0.2 or later where the vulnerability is fixed, disabling allowMultiQueries=true in the MySQL database configuration in production environments, running the database under least-privilege accounts (never root), replacing template-based raw SQL rendering with parameterized queries and input whitelists, and blocking or validating MySQL-specific stacked-query and file-write syntax at application boundaries. [2]

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