CVE-2026-55786: Flyto2 Core
The National Vulnerability Database (NVD) records that from 2.26.2 until 2.26.4 Flyto2 Core's HTTP Model Context Protocol (MCP) route accepted unauthenticated tools/call requests that could reach its shell-execution module and run operating-system commands; fixed in 2.26.4.
The record
- Kind
- Vulnerability
- Source record
- CVE-2026-55786: Flyto2 Core is an execution kernel for automation and AI-agent workflows. From 2.26.2 until 2.26.4, the HTTP M (National Vulnerability Database record)
- Record published
- 2026-10-14
- Posted here
- 2026-10-15
- World
- Software agents · Enterprise work agents
- Controls concerned
- Authority binding C-A2; Containment and isolation C-E5
- Checked
- Checked against its record on 2026-10-22 by a reader who did not draft it; report
verification/reports/SIG-2026-10-15-002-2026-10-22.md.
A signal's controls are the ones its record points at, the exposure; a case's controls are the ones its records show were absent or failed, so the two can differ.
Corrections
Changes to what this signal says, with the reason. Every earlier version is kept.
- 2026-10-22: Summary. Plain-language rule: abbreviations spelled out at first use (NVD, MCP, SDK). No claim changed. 22 October 2026.
Show the change
Before: NVD records that from 2.26.2 until 2.26.4 Flyto2 Core's HTTP MCP route accepted unauthenticated tools/call requests that could reach its shell-execution module and run operating-system commands; fixed in 2.26.4.After: The National Vulnerability Database (NVD) records that from 2.26.2 until 2.26.4 Flyto2 Core's HTTP Model Context Protocol (MCP) route accepted unauthenticated tools/call requests that could reach its shell-execution module and run operating-system commands; fixed in 2.26.4.
What a signal is. A signal records what a primary record says; it assigns no fault. It is lighter than a case: one dated item from one record, tagged with the world, sector and controls it touches. It becomes a case when it meets the bar for one.
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