CVE-2026-58057 (GCVE-0-2026-58057)
Vulnerability from cvelistv5
Published
2026-06-28 01:32
Modified
2026-06-29 12:25
Severity ?
5.0 (Medium) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
2.3 (Low) - CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
CWE
  • CWE-178 - Improper Handling of Case Sensitivity
Summary
Flowise before 3.1.3 validates Custom MCP stdio environment variables against a denylist using a case-sensitive comparison, so on Windows, where environment names are case-insensitive, supplying 'node_options' bypasses the NODE_OPTIONS denylist entry. An authenticated user who can configure a Custom MCP node can thereby inject NODE_OPTIONS --require and execute arbitrary code in the Flowise server context.
References
Impacted products
Vendor Product Version
Flowise Flowise Version: 0   ≤
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