CVE-2026-55786 Flyto2 Core - Remote Code Execution

Flyto2 Core 2.26.2 to 2.26.4 contains a remote code execution caused by unauthenticated JSON-RPC requests forwarding execute_module arguments without authentication, letting unauthenticated attackers execute arbitrary OS commands, exploit requires network or local access to the MCP POST /mcp route.

CVSS base score 8.4 /10
High
CISA KEV
Exploited in the wild
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

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

Vendor fix

Update to version 2.26.4 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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