CVE-2026-4959
OpenBMB XAgent ShareServer WebSocket Endpoint share.py check_user missing authentication
Vexday Risk Score
33Attention
SSVC decision (CISA)
Attend
PoC available → attend closely
CVSS 6.9EPSS 0.4%KEV nãoPoC públicaNuclei —Metasploit —Patch —
Lifecycle
27 Mar 2026Published on NVD
Recommendation: Plan a near-term fix — a public PoC already exists.
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Affected products
OpenBMB · XAgentpublic PoCs found — 1
cve_referencegist.github.com/YLChen-007/531ec6b169f4b9ecbc8c2f0b2cd7c5eeunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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