CVE-2026-67427: Flytohub Flyto-Core

High severity, CVSS 8.6. EPSS: 0.6% chance of exploitation in the next 30 days.

Flyto2 Core is an execution kernel for automation and AI-agent workflows. Prior to 2.26.6, the workflow engine variable resolver expands ${env.VAR} for any host environment variable without an allowlist or capability policy check, allowing a workflow parameter to bypass the default capability policy denylist for env.get and env.load_dotenv and exfiltrate secrets through allowed modules. This issue is fixed in version 2.26.6.

Affected products

• Flytohub Flyto-Core: before 2.26.6 (fixed in 2.26.6)

Published 2026-07-29. Last modified 2026-07-30.