by Kastro
Paper/Archive/CVE-2026-67429

CVE-2026-67429

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

EPSS 0.6%public exploitCVSS 10.0
critical.is priorityof 100
50
CVSS 10.0 (CNA)10.0 / 10 × 3030.0Not in CISA KEV+300.0EPSS percentile 47.5.475 × 209.5Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
flyto-core< 2.26.6–CNA

Scores by source

GitHub_M (CNA)10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

exploitgithub.com/flytohub/flyto-core/security/advisories/GHSA-2956-977x-2w3rrefgithub.com/flytohub/flyto-core/commit/d5f89d71303e3c1e6418d347c5c55fcd173cc8ccrefgithub.com/flytohub/flyto-core/releases/tag/v2.26.6