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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-67429
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-29 19:16:52 UTC
Updated2026-07-29 20:17:11 UTC
DescriptionFlyto2 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.

Risk And Classification

Primary CVSS: v3.1 10 CRITICAL from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H

Problem Types: CWE-22 | CWE-73 | CWE-22 CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | CWE-73 CWE-73: External Control of File Name or Path

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary10CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H
3.1CNADECLARED10CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Flytohub Flyto-core affected < 2.26.6 Not specified

References

ReferenceSourceLinkTags
github.com/flytohub/flyto-core/security/advisories/GHSA-2956-977x-2w3r 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
github.com/flytohub/flyto-core/releases/tag/v2.26.6 [email protected] github.com
github.com/flytohub/flyto-core/commit/d5f89d71303e3c1e6418d347c5c55fcd17... [email protected] github.com
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