CVE-2026-105740 Langflow - Remote Code Execution

Langflow < 1.9.0 contains a remote code execution caused by unsanitized command injection in MCP server with "Stdio" transport, letting authenticated users execute arbitrary commands on the server, exploit requires user authentication.

CVSS base score 9.9 /10
Critical
CISA KEV
Exploited in the wild
Public exploit
None known
Authentication
Required
EPSS
0.59% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Remote Code Execution
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Published
5 October 2026
Updated
15 October 2026
Weakness
CWE-78

Vendor fix

Upgrade to version 1.9.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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