CVE-2026-4958 Details
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.
An authorization bypass vulnerability has been identified in OpenBMB XAgent version 1.0.0, specifically within the WebSocket endpoint replay server. The issue arises in the 'on_connect' and 'send_data' functions of 'replayer.py', where the 'interaction_id' parameter is not properly validated. This flaw allows any authenticated user to access and replay another user's interaction history, extracting sensitive third-party API keys that are stored in plaintext. The vulnerability can be exploited remotely, and while the exploitation process is complex, a public proof-of-concept is available.
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 30, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://gist.github.com/YLChen-007/dc46c2a710ecb9e855695f32da8bcab5 | [email protected] | ExploitThird Party Advisory |
| https://vuldb.com/?ctiid.353835 | [email protected] | Permissions RequiredVDB Entry |
| https://vuldb.com/?id.353835 | [email protected] | Permissions RequiredVDB Entry |
| https://vuldb.com/?submit.777618 | [email protected] | Issue TrackingThird Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-285 | Improper Authorization | [email protected] |
| CWE-639 | Authorization Bypass Through User-Controlled Key | [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] |