Read the docs
TI-2026-04318 Aliases CVE-2026-4957GHSA-hp6g-348q-ppq3

OpenBMB XAgent API Key function_handler.py FunctionHandler.handle_tool_call log file

Priority MEDIUM 56CWE-200Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · None · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-200.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00291 21st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OpenBMBXAgent1.0.0—No fix listedCNA
  • XAgent VendorOpenBMB Affected 1.0.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:openbmb:xagent:1.0.0:*:*:*:*:*:*:*1.0.0VulnerableOpenBMB
  • cpe:2.3:a:openbmb:xagent:1.0.0:*:*:*:*:*:*:* Versions 1.0.0 Vulnerable ·OpenBMB

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-4957
  2. 2026-10-03 Alias added: GHSA-hp6g-348q-ppq3

References

Exploit 1

  • TI-2024-01867 OpenBMB XAgent Privileged Mode sandbox CVSS 3.1HIGH 8.8
  • TI-2026-04320 OpenBMB XAgent ShareServer WebSocket Endpoint share.py check_user missing authentication CVSS 4.0MEDIUM 6.9
  • TI-2025-05683 OpenBMB XAgent community path traversal CVSS 4.0MEDIUM 5.1
  • TI-2026-04319 OpenBMB XAgent WebSocket Endpoint replayer.py ReplayServer.send_data authorization CVSS 4.0LOW 2.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences