CVE-2026-67429: Flytohub Flyto-Core

Critical severity, CVSS 10.0. EPSS: 0.8% 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, image.download and related file-writing modules use caller-controlled output_dir instead of validate_path_with_env_config and its FLYTO_SANDBOX_DIR confinement, allowing attacker-controlled response bytes to be written to arbitrary filesystem paths the process can access. 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.