The provided vulnerability information does not include specific code examples, commit diffs, or patch details that would allow identification of exact vulnerable functions. While the CWE-89 (SQL Injection) and affected versions are documented, Magento's architecture typically uses ORM layers and parameterized queries, making direct SQL injection vulnerabilities rare in core code. The advisory emphasizes exploitation requires 'knowledge of tooling beyond just using the UI,' suggesting the vulnerability might exist in a less obvious component or require chaining techniques. Without concrete code references or patch comparisons, we cannot confidently pinpoint specific functions responsible for the SQL injection vulnerability.