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Critical · 10.0 CVE-2026-67429 EUVD-2026-50473GHSA-2956-977x-2w3rPYSEC-2026-3568

Flyto2 Core: Arbitrary file write via image.download (and other file-writing modules)

Published Jul 29, 2026 · Updated Jul 29, 2026 · Assigned by GitHub_M

Description

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

VendorProductAffectedFixed
flytohub flyto-core < 2.26.6 —

Affected packages

EcosystemPackageAffectedFixedRecord
PyPI flyto-core < 2.26.7 2.26.7 GHSA-2956-977x-2w3r

References