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CVE-2026-4959

MEDIUM CVSS 4.0: 6.9 EPSS 0.07%
Updated Mar 30, 2026
OpenBMB
Parameter Value
CVSS 6.9 (MEDIUM)
Type CWE-306 (Missing Authentication for Critical Function), CWE-287 (Improper Authentication)
Vendor OpenBMB
Public PoC No

A vulnerability was found in OpenBMB XAgent 1.0.0. This impacts the function check_user of the file XAgentServer/application/websockets/share.py of the component ShareServer WebSocket Endpoint. Performing a manipulation of the argument interaction_id results in missing authentication.

Remote exploitation of the attack is possible. The exploit has been made public and could 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
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
Low
Partial disruption

CVSS Vector v4.0