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Description

A flaw has been found in OpenBMB XAgent 1.0.0. The impacted element is the function FunctionHandler.handle_tool_call of the file XAgent/function_handler.py of the component API Key Handler. This manipulation of the argument api_key causes sensitive information in log files. The attack may be initiated remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

PUBLISHED Reserved 2026-03-27 | Published 2026-03-27 | Updated 2026-03-27 | Assigner VulDB




MEDIUM: 5.1CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
LOW: 2.7CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R
LOW: 2.7CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R
3.3AV:N/AC:L/Au:M/C:P/I:N/A:N/E:POC/RL:ND/RC:UR

Problem types

Sensitive Information in Log Files

Information Disclosure

Product status

1.0.0
affected

Timeline

2026-03-27:Advisory disclosed
2026-03-27:VulDB entry created
2026-03-27:VulDB entry last update

Credits

Eric-z (VulDB User) reporter

VulDB coordinator

References

vuldb.com/?id.353834 (VDB-353834 | OpenBMB XAgent API Key function_handler.py FunctionHandler.handle_tool_call log file) vdb-entry technical-description

vuldb.com/?ctiid.353834 (VDB-353834 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/?submit.777615 (Submit #777615 | OpenBMB XAgent v1.0.0 CWE-532) third-party-advisory

gist.github.com/YLChen-007/6279f3de0c2dff7732eaaf820843b562 exploit

cve.org (CVE-2026-4957)

nvd.nist.gov (CVE-2026-4957)

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