What’s Vulnerable › Vulnerabilities

CVE-2026-4959: OpenBMB XAgent ShareServer WebSocket Endpoint share.py check_user missing authentication

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-03-27 · updated 2026-10-26
• Weakness: CWE-287

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.

Affected products

• OpenBMB XAgent: 1.0.0

References

• https://gist.github.com/YLChen-007/531ec6b169f4b9ecbc8c2f0b2cd7c5ee
• https://vuldb.com/?ctiid.353836
• https://vuldb.com/?id.353836
• https://vuldb.com/?submit.777622

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