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.

References

• https://nvd.nist.gov/vuln/detail/CVE-2026-4957
• https://gist.github.com/YLChen-007/6279f3de0c2dff7732eaaf820843b562
• https://vuldb.com/?ctiid.353834
• https://vuldb.com/?id.353834
• https://vuldb.com/?submit.777615