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Advisory record · GHSA-h9f9-h6gm-wc85

flyto-core has Unauthenticated Command Execution via HTTP MCP `execute_module`

CVSS 8.4 HighEPSS 0.0041 · 35th percentile

Published by the GitHub Advisory Database at 6 Jul 2026, 17:41 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
flyto-corePyPI>=2.26.2, <2.26.42.26.4
Identifiers
GHSA-h9f9-h6gm-wc85 · CVE-2026-55786 · PYSEC-2026-2482
Weakness (CWE)
CWE-78 · CWE-306
Tags
Published
6 Jul 2026
Updated
14 Oct 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

flyto-core 2.26.2 to before 2.26.4 has an unauthenticated HTTP endpoint at /mcp that runs modules, including a shell execution module. Anyone who can reach it (local processes by default, or any network host if bound to 0.0.0.0) can run OS commands as the server process. Upgrade to 2.26.4.

Written 1 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
8.4 High 3.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0041, the 35th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:08 UTC First seen by agentprime
  2. 31 Oct 2026, 14:08 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.