What is CVE-2026-67429?

CVE-2026-67429 is a critical-severity vulnerability in Flytohub Flyto-Core, classified under Path Traversal. CVSS score: 10.0/10. Published 2026-07-29.

How severe is CVE-2026-67429?

Critical severity. CVSS v3 base score is 10.0 out of 10.

Path Traversal in Flytohub Flyto-Core

CVE-2026-67429

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.

Vulnerability class: Path Traversal (Directory Traversal)

Published 2026-07-29 · last modified 2026-10-24.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (47.5th percentile), scored 2026-11-04.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 47.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.006 · change: -0.002

Affected products

Flytohub Flyto-Core — versions < 2.26.6

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-67429?: CVE-2026-67429 is a critical-severity vulnerability in Flytohub Flyto-Core, classified under Path Traversal. CVSS score: 10.0/10. Published 2026-07-29.
How severe is CVE-2026-67429?: Critical severity. CVSS v3 base score is 10.0 out of 10.