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CVE-2026-4958

LOW CVSS 4.0: 2.3 EPSS 0.03%
Updated Mar 30, 2026
OpenBMB
Parameter Value
CVSS 2.3 (LOW)
Type CWE-639 (Authorization Bypass), CWE-285 (Improper Authorization)
Vendor OpenBMB
Public PoC No

A vulnerability has been found in OpenBMB XAgent 1.0.0. This affects the function ReplayServer.on_connect/ReplayServer.send_data of the file XAgentServer/application/websockets/replayer.py of the component WebSocket Endpoint. Such manipulation of the argument interaction_id leads to authorization bypass.

The attack may be launched remotely. Attacks of this nature are highly complex. The exploitability is reported as difficult.

The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
Low
Partial data leak
Integrity
None
No data modification
Availability
None
No disruption

CVSS Vector v4.0