Thursday, 29 October 2026
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IBM Langflow OSS code injection via ToolGuard integration

IBM Langflow OSS versions 1.0.0 through 1.10.0 contain a code injection vulnerability in the ToolGuard component that allows authenticated users to bypass custom component restrictions and achieve arbitrary Python code execution on the backend.

Disclosed 17 July 2026 · Record updated 1 October 2026

Impact

Authenticated users with flow creation privileges can execute arbitrary Python code on the backend, with potential for cross-tenant escalation via the MCP update_flow_component_field tool.

Our coverage

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Sources

  1. nvd.nist.govhttps://nvd.nist.gov/vuln/detail/CVE-2026-9135
  2. nvd.nist.govhttps://nvd.nist.gov/vuln/detail/CVE-2026-14501
  3. nvd.nist.govhttps://nvd.nist.gov/vuln/detail/CVE-2026-15995
  4. nvd.nist.govhttps://nvd.nist.gov/vuln/detail/CVE-2026-7755