EUVD-2026-16690CVSS Vector
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/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
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4Description
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.
Analysis
OpenBMB XAgent 1.0.0 allows authenticated remote attackers to bypass authorization controls via manipulation of the interaction_id argument in the WebSocket ReplayServer endpoint (XAgentServer/application/websockets/replayer.py), enabling unauthorized access to replay functionality. The vulnerability requires low privileges and is difficult to exploit due to high attack complexity, but publicly available exploit code exists. …
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Remediation
During next maintenance window: Apply vendor patches when convenient. Monitor vendor channels for updates.
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