CVE-2026-67429: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in flytohub flyto-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.
AI Analysis
Technical Summary
flyto-core versions before 2.26.6 contain a path traversal vulnerability (CWE-22, CWE-73) where the image.download and related file-writing modules use a caller-controlled output_dir without proper confinement via validate_path_with_env_config and the FLYTO_SANDBOX_DIR sandbox. This allows an attacker to write response bytes to arbitrary filesystem locations accessible by the process. The vulnerability has a CVSS 3.1 base score of 10.0 (critical) with network attack vector, low attack complexity, no privileges or user interaction required, and impacts integrity and availability with scope change. The issue is fixed in version 2.26.6.
Potential Impact
An unauthenticated attacker can exploit this vulnerability remotely to write arbitrary files anywhere on the filesystem accessible by the flyto-core process. This can lead to integrity and availability impacts, including potential overwriting of critical files or denial of service. The vulnerability does not impact confidentiality according to the CVSS vector.
Mitigation Recommendations
Upgrade flyto-core to version 2.26.6 or later, where this vulnerability is fixed. No other official remediation or temporary fixes are indicated. Patch status is confirmed by the vendor advisory stating the fix is in 2.26.6.
CVE-2026-67429: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in flytohub flyto-core
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.
CVSS v3.1
Score 10.0critical
Affected software
pkg:github/flytohub/flyto-coreRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
flyto-core versions before 2.26.6 contain a path traversal vulnerability (CWE-22, CWE-73) where the image.download and related file-writing modules use a caller-controlled output_dir without proper confinement via validate_path_with_env_config and the FLYTO_SANDBOX_DIR sandbox. This allows an attacker to write response bytes to arbitrary filesystem locations accessible by the process. The vulnerability has a CVSS 3.1 base score of 10.0 (critical) with network attack vector, low attack complexity, no privileges or user interaction required, and impacts integrity and availability with scope change. The issue is fixed in version 2.26.6.
Potential Impact
An unauthenticated attacker can exploit this vulnerability remotely to write arbitrary files anywhere on the filesystem accessible by the flyto-core process. This can lead to integrity and availability impacts, including potential overwriting of critical files or denial of service. The vulnerability does not impact confidentiality according to the CVSS vector.
Mitigation Recommendations
Upgrade flyto-core to version 2.26.6 or later, where this vulnerability is fixed. No other official remediation or temporary fixes are indicated. Patch status is confirmed by the vendor advisory stating the fix is in 2.26.6.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-07-29T15:07:24.991Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a6a4bfc9c2644c7f8e93ed9
Added to database: 07/29/2026, 18:52:44 UTC
Last enriched: 07/29/2026, 19:07:37 UTC
Last updated: 07/29/2026, 19:23:01 UTC
Views: 5
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