canary

Fail

Audited by Gen Agent Trust Hub on Oct 26, 2026

Risk Level: HIGHREMOTE_CODE_EXECUTIONINDIRECT_PROMPT_INJECTIONCOMMAND_EXECUTIONDATA_EXFILTRATION
Full Analysis
  • [REMOTE_CODE_EXECUTION]: The setup section downloads an installation script from the well-known service https://bun.sh/install and executes it via bash.
  • Evidence: The skill includes logic to download the script to a temporary file, verify its integrity using a hardcoded SHA256 checksum (bab8acfb046aac8c72407bdcce903957665d655d7acaa3e11c7c4616beae68dd), and then execute it if the checksum matches.
  • [INDIRECT_PROMPT_INJECTION]: The skill ingests untrusted data from external websites during its monitoring and discovery phases, creating a surface for indirect prompt injection.
  • Ingestion points: Data enters the agent context from external URLs via the browse tool (using $B goto, $B links, $B text, etc.) in SKILL.md Phases 2, 3, 4, and 5.
  • Boundary markers: No specific delimiters or "ignore embedded instructions" warnings are applied to the external content retrieved by the browse tool.
  • Capability inventory: The skill utilizes Bash, Write, and Read tools, performing file system operations and executing multiple local scripts.
  • Sanitization: There is no evidence of sanitization, filtering, or escaping of the web content before it is processed by the agent.
  • [COMMAND_EXECUTION]: The skill preamble and various phases execute several local binaries and scripts provided by the vendor to manage state, configuration, and telemetry.
  • Evidence: Commands such as gstack-config, gstack-update-check, gstack-slug, gstack-learnings-search, and gstack-timeline-log are called extensively throughout SKILL.md.
  • [DATA_EXFILTRATION]: The skill contains logic for telemetry and artifact synchronization which involves sending data to external endpoints.
  • Evidence: Telemetry data is recorded locally and optionally sent to a remote server via gstack-telemetry-log. Additionally, the Artifacts Sync section describes publishing artifacts to a GitHub repository. Both features are designed to be user-prompted before activation.
Recommendations
  • HIGH: Downloads and executes remote code from: https://bun.sh/install - DO NOT USE without thorough review
Audit Metadata
Risk Level
HIGH
Analyzed
Oct 26, 2026, 06:32 PM