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    CVE-2026-4958

    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.

    Published:Mar 27, 2026
    Last Modified:Apr 29, 2026
    EPS:Mar 27, 2026
    EPSS Score:0.00032
    CVSS Score:3.1

    Affected Products

    Vendor
    Openbmb
    Product
    Xagent

    Exploits

    https://gist.github.com/YLChen-007/dc46c2a710ecb9e855695f32da8bcab5

    Related CVEs

    CVE-2026-72713 (CVSS 8.7) — XAgent contains a path traversal vulnerability in the workspace file endpoint that allows self-registered or d…
    CVE-2026-4959 (CVSS 5.5) — A vulnerability was found in OpenBMB XAgent 1.0.0. This impacts the function check_user of the file XAgentServ…
    CVE-2026-4957 (CVSS 2) — A flaw has been found in OpenBMB XAgent 1.0.0. The impacted element is the function FunctionHandler.handle_too…
    CVE-2026-3954 (CVSS 5.5) — A weakness has been identified in OpenBMB XAgent 1.0.0. Affected by this vulnerability is the function workspa…
    CVE-2025-6281 (CVSS 2) — A vulnerability has been found in OpenBMB XAgent up to 1.0.0 and classified as critical. Affected by this vuln…
    CVE-2024-2007 (CVSS 5.3) — A vulnerability was found in OpenBMB XAgent 1.0.0. It has been declared as critical. Affected by this vulnerab…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High