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CVSS 10.0CVSS 10.0 · CRITICAL

CVE-2026-67429Arbitrary file write in Flyto2 Core

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.

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Analysis

Flyto2 Core permite la escritura de archivos arbitrarios en el sistema al omitir las restricciones del sandbox en sus módulos de descarga y automatización. Un atacante puede controlar la ruta de salida para sobrescribir archivos críticos del servidor o inyectar código malicioso en cualquier ubicación accesible por el proceso.

Relevant roles

IABackendPythonCyberSecurityMachineLearningLinux

Severity

Score: 10.0(CRITICAL)
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H
AV: NETWORK
AC: LOW
PR: NONE
UI: NONE
S: CHANGED
C: NONE
I: HIGH
A: HIGH
Weakness (CWE): CWE-22CWE-73

EPSS

No EPSS score yet (CVE may be too fresh).

Technical 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.

Published: 7/29/2026, 7:16:52 PM
Last modified: 7/29/2026, 8:17:11 PM

References

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