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CVE-2026-4958

OpenBMB XAgent WebSocket Endpoint replayer.py ReplayServer.send_data authorization

Published: Mar 27, 2026Updated: Apr 29, 2026 Sources: CVE List NVDCWE-285
3.1LOW
NVD MITRE
EPSS Score
0.4%
Top 68.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
Not available

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:LUI:NS:UC:LI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-285CWE-639

Affected Products

OpenBMB
oss-project
XAgentMixed
Hardware Firmware / bios-uefi
and 1 more affected products View all →

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

https://gist.github.com/YLChen-007/dc46c2a710ecb9e855695f32da8bcab5
gist.github.com
https://vuldb.com/?ctiid.353835
vuldb.com
https://vuldb.com/?id.353835
vuldb.com
and 1 more references View all →

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