Mastra is a Typescript framework for building AI agents and assistants. Versions 0.13.8 through 0.13.20-alpha.0 are vulnerable to a Directory Traversal attack that results in the disclosure of directory listings. The code contains a security check to prevent path traversal for reading file contents, but this check is effectively bypassed by subsequent logic that attempts to find directory suggestions. An attacker can leverage this flaw to list the contents of arbitrary directories on the users filesystem, including the users home directory, exposing sensitive information about the file systems structure. This issue is fixed in version 0.13.20.
The product inappropriately exposes a directory listing with an index of all the resources located inside of the directory.