eat-pray-ai yutu up to 0.10.9-dev0 caption-download MCP tool pkg/caption/caption.go Caption.Download File path traversal

Summaryinfo

A vulnerability was found in eat-pray-ai yutu up to 0.10.9-dev0. It has been declared as problematic. This affects the function Caption.Download of the file pkg/caption/caption.go of the component caption-download MCP tool. Executing a manipulation of the argument File can lead to path traversal. This vulnerability is handled as CVE-2026-50158. It is possible to launch the attack on the local host. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in eat-pray-ai yutu up to 0.10.9-dev0. It has been declared as problematic. This vulnerability affects the function Caption.Download of the file pkg/caption/caption.go of the component caption-download MCP tool. The manipulation of the argument file with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect integrity, and availability. CVE summarizes:

yutu is an AI-powered toolkit for managing and growing YouTube channels. Prior to 0.10.9, the caption-download MCP tool accepts a caller-controlled file parameter through cmd/caption/download.go and passes it to Caption.Download() in pkg/caption/caption.go, where os.Create() creates or truncates that path without using the pkg.Root confinement boundary backed by YUTU_ROOT. A principal able to invoke caption-download, including a local HTTP client when the MCP server runs with its default authentication-disabled configuration, can write downloaded caption bytes to any path writable by the yutu process outside YUTU_ROOT. This can overwrite application files, configuration, shell startup files, logs, or data and can cause persistent code execution or denial of service depending on the selected writable target. Live caption retrieval also requires usable service credentials and an accessible caption identifier. This issue is fixed in version 0.10.9.

The advisory is available at github.com. This vulnerability was named CVE-2026-50158 since 06/03/2026. The exploitation appears to be easy. Local access is required to approach this attack. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

Upgrading to version 0.10.9-dev1 eliminates this vulnerability.

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Productinfo

Type

• Artificial Intelligence Software

Vendor

• eat-pray-ai

Name

• yutu

Version

• 0.10.9-dev0

Website

• Product: https://github.com/eat-pray-ai/yutu/

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