Control Chromecast

• Outcome: Pass
• Latest audit: Sep 10, 2026 · 4:46 AM UTC
• Version: 1.0.0

Overview

This skill is a straightforward Chromecast control reference that uses the expected catt tool, with some normal LAN and dependency-installation risks to understand before use.

Install only if you are comfortable letting catt control Chromecast devices on your local network. Avoid casting sensitive local files on untrusted networks, and consider pinning or reviewing the catt package source if you need stricter supply-chain assurance.

A.I.G

Vulnerability Patterns

• Insecure Dependencies: Introduces malicious components through unsafe dependency sources
• Skill Instruction Hijacking: Alters the agent's session goals or safety constraints when the skill loads
• Agent Memory Poisoning: Writes attacker-controlled rules into memory that affect later sessions
• Remote Payload Retrieval and Execution: Fetches external code whose behavior can change after review
• Embedded Malicious Code: Ships malicious scripts inside the skill and executes them locally

Findings (1)

T08 · Insecure Dependencies

Warning

• Location: SKILL.md:5

Finding

Unpinned Third-Party Package Installation

Content

View full analysis

Vulnerability Details

File Location: SKILL.md, line 5
Vulnerability Type: Unpinned dependency and insufficient package integrity verification
Risk Level: Medium

Vulnerable Code

yaml

metadata: {"clawdbot":{"emoji":"📺","requires":{"bins":["catt"]},"install":[{"id":"pip","kind":"uv","package":"catt","bins":["catt"],"label":"Install via pip/uv"}]}}

Technical Analysis

The skill metadata directs the installer to retrieve the third-party catt package without specifying an exact version or cryptographic integrity hash. Dependency resolution can therefore select package contents that differ from those reviewed during this audit. Transitive dependencies are also not locked or verified.

The package name is consistent with the skill's declared purpose and homepage, and there is no evidence in the reviewed file that the current package is malicious. Nevertheless, relying on an unpinned package from an external registry creates a supply-chain exposure: compromise of the package publisher, package registry, or a transitive dependency could cause attacker-controlled code to be installed or executed.

Attack Path

1. An attacker compromises the upstream catt distribution channel, publisher account, or one of its unconstrained transitive dependencies.
2. The attacker publishes a modified package version containing malicious installation-time or runtime behavior.
3. A user installs the skill, and the uv/Python package resolver retrieves the current unpinned package and dependencies.
4. Malicious code executes during package installation, import, or subsequent invocation of the catt binary.
5. The payload operates with the privileges of the account performing the installation or running the command.

Impact Assessment

Successful exploitation could permit arbitrary code execution under the installing or invoking user's account. The resulting access could include reading or modifying files ava ...[truncated 290 chars]

Remediation

View remediation

Remediation Suggestions

• Pin catt to an exact, reviewed release rather than resolving the latest available version.
• Record and verify cryptographic hashes for the package artifacts.
• Lock all transitive dependencies using a reproducible lockfile or equivalent constraints.
• Retrieve packages only from a trusted, explicitly configured package index.
• Perform installation in an isolated, least-privileged environment.
• Regularly review pinned dependencies for security advisories and update them through a controlled review process.
• Where supported by the skill packaging system, verify package provenance or signed release artifacts before installation.

SkillSpector

Vulnerability Patterns

• Prompt Injection: Instruction Override, Hidden Instructions, Exfiltration Commands
• Data Exfiltration: External Transmission, Env Variable Harvesting, File System Enumeration
• Privilege Escalation: Excessive Permissions, Sudo/Root Execution, Credential Access
• Supply Chain: Unpinned Dependencies, External Script Fetching, Obfuscated Code
• Excessive Agency: Unrestricted Tool Access, Autonomous Decision Making, Scope Creep

Findings (1)

Missing User Warnings

Medium

• Category: Not specified by scanner
• Confidence: 88% confidence

Finding

The documentation explicitly encourages casting local files but does not warn that this typically causes the host machine to serve the file over the local network to the Chromecast during playback. In a local-network control skill, omitting that behavior can lead users to unintentionally expose sensitive local media or metadata to other reachable devices or users on the same network.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.