T08 · Insecure Dependencies
- Location
SKILL.md:58- Finding
Unpinned Third-Party CLI Execution
- Content
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Vulnerability Details
File Location:
SKILL.md, lines 58–62
Vulnerability Type: Unpinned and remotely retrieved npm command-line dependencies
Risk Level: Mediumbash # Install shadcn/ui in the project npx shadcn@latest init # Install the required components npx shadcn@latest add button card table dialog # Import v0-generated code through the CLI npx v0 add <generated-code URL>Technical Analysis
The documented commands instruct users to retrieve and immediately execute third-party npm packages through
npx. Theshadcnpackage explicitly uses the mutable@latesttag, while thev0package has no version constraint. Consequently, the code executed when users follow these instructions can differ from the version that was previously reviewed.The
npx v0 addoperation also accepts a remote generated-code URL. The documentation does not require validation of the URL's origin, review of downloaded content, or inspection of resulting project changes. This creates an additional supply-chain boundary where untrusted code or configuration may be imported.No evidence shows that the referenced packages or URLs are currently malicious. The risk arises from unsafe dependency retrieval and execution practices rather than a confirmed malicious payload in the audited project.
Attack Path
- An attacker compromises a referenced npm package, its publisher account, registry distribution path, or a transitive dependency. Alternatively, the attacker supplies a malicious generated-code URL.
- A user follows the instructions and invokes
npx shadcn@latestor the unversionednpx v0command. npxretrieves a mutable package release and executes its CLI code with the permissions of the invoking user.- The compromised CLI executes malicious behavior, or the remote URL causes attacker-controlled code and configuration to be added to the project.
- The malicious content may affect the loc ...[truncated 739 chars]
- Remediation
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Remediation Suggestions
- Pin every CLI to an exact, reviewed version instead of using
@latestor an omitted version. - Record resolved dependency versions and integrity metadata in the project's lockfile.
- Review package provenance, publisher identity, release history, and signatures or attestations where available.
- Restrict generated-code URLs to documented, trusted HTTPS domains and reject shortened, redirected, or user-controlled locations.
- Download and inspect generated content before adding it to the project; do not combine remote retrieval with immediate execution.
- Review the complete source diff after each CLI operation, including package scripts, configuration files, dependencies, and build hooks.
- Run third-party generators in an isolated container or disposable environment without production credentials, SSH keys, cloud tokens, or unnecessary filesystem access.
- Add dependency scanning and secret scanning to continuous integration before imported code can be merged or deployed.
- Pin every CLI to an exact, reviewed version instead of using