Critical 10.0Published Jul 29, 2026

CVE-2026-67429Flyto2 Core: Arbitrary file write via image.download (and other file-writing modules)

Updated under an hour ago (Oct 26, 2026, 3:50 PM ET)

This data is behind schedule: last updated Oct 26, 2026, 3:50 PM ET. We are working on it.Behind: CVE records (cvelistV5).

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It affects flytohub flyto-core. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for flytohub flyto-core

Exploited in the last 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.

CVSS: 10.0 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H
Weakness (CWE): CWE-22, CWE-73
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Jul 29, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

flytohub flyto-core flytohub:flyto_core (from the name)	before 2.26.6	CNA record

References

References

https://github.com/flytohub/flyto-core/security/advisories/GHSA-2956-977x-2w3r	x-refsource-confirm
https://github.com/flytohub/flyto-core/commit/d5f89d71303e3c1e6418d347c5c55fcd173cc8cc	x-refsource-misc
https://github.com/flytohub/flyto-core/releases/tag/v2.26.6	x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.