CVE-2026-4959 Details
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.
A missing authentication vulnerability has been identified in OpenBMB XAgent version 1.0.0, specifically within the ShareServer WebSocket endpoint. The issue arises in the 'check_user' function of 'XAgentServer/application/websockets/share.py', where the authentication check has been disabled. This flaw allows any unauthenticated client to connect to the WebSocket endpoint '/ws/share/{interaction_id}' using fake credentials. Once connected, the client can request the execution history of any interaction, including sensitive third-party API keys stored in plaintext. The vulnerability can be exploited remotely, without the need for a valid account or special tools.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 31, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://gist.github.com/YLChen-007/531ec6b169f4b9ecbc8c2f0b2cd7c5ee | [email protected] | ExploitThird Party Advisory |
| https://vuldb.com/?ctiid.353836 | [email protected] | Permissions RequiredVDB Entry |
| https://vuldb.com/?id.353836 | [email protected] | Permissions RequiredVDB Entry |
| https://vuldb.com/?submit.777622 | [email protected] | Issue TrackingThird Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-287 | Improper Authentication | [email protected] |
| CWE-306 | Missing Authentication for Critical Function | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| openbmb xagent | 1.0.0 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 29, 2026 | Initial Analysis | [email protected] |
| Apr 29, 2026 | Data Remediation | [email protected] |
| Mar 27, 2026 | New CVE Received | [email protected] |