CVE-2026-54449 (GCVE-0-2026-54449)
Vulnerability from cvelistv5
Published
2026-08-20 16:10
Modified
2026-08-21 21:47
CWE
  • CWE-77 - Improper Neutralization of Special Elements used in a Command ('Command Injection')
Summary
LangBot is a global IM bot platform designed for LLMs. In version 4.10.7 and earlier, any authenticated user can add or change an STDIO MCP server configuration without an adequate authorization boundary. In src/langbot/pkg/provider/tools/loaders/mcp.py, StdioServerParameters accepts the configured command and arguments and starts a server-side subprocess on the LangBot server. An attacker who can sign up or obtain an account can use the Extensions MCP configuration to execute arbitrary commands with the privileges of the LangBot service, enabling data disclosure, modification, and service disruption. No fixed version is available as of this review.
Impacted products
Vendor Product Version
langbot-app LangBot Version: <= 4.10.7
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Show details on NVD website


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