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I. Basic Information for CVE-2026-4959
Vulnerability Information

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Vulnerability Title
OpenBMB XAgent ShareServer WebSocket Endpoint share.py check_user missing authentication
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
关键功能的认证机制缺失
Source: NVD (National Vulnerability Database)
Vulnerability Title
XAgent 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
XAgent是OpenBMB开源的一个开源的实验性大型语言模型(LLM)驱动的自治代理。 XAgent 1.0.0版本存在访问控制错误漏洞,该漏洞源于对文件XAgentServer/application/websockets/share.py中参数interaction_id的错误操作,可能导致缺少身份验证。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
OpenBMBXAgent 1.0.0 cpe:2.3:a:openbmb:xagent:*:*:*:*:*:*:*:*
II. Public POCs for CVE-2026-4959
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III. Intelligence Information for CVE-2026-4959
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IV. Related Vulnerabilities
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