skills/facebook/react/flags/Gen Agent Trust Hub

flags

Warn

Audited by Gen Agent Trust Hub on Feb 15, 2026

Risk Level: MEDIUMCOMMAND_EXECUTIONPROMPT_INJECTION
Full Analysis
  • Command Execution (MEDIUM): The skill executes yarn flags $ARGUMENTS. Direct interpolation of user-provided strings into a shell command is dangerous. If the agent's execution environment does not perform strict shell-escaping, an attacker could provide shell metacharacters (e.g., ;, |, &) to execute arbitrary code.
  • Indirect Prompt Injection (MEDIUM): The skill ingests and explains output from an external feature flag system.
  • Ingestion points: Command output from yarn flags (SKILL.md, Instruction 1 and 2).
  • Boundary markers: Absent; there are no delimiters or instructions to the agent to ignore instructions embedded in the flag data.
  • Capability inventory: The skill can execute local subprocesses via yarn.
  • Sanitization: None; the agent is instructed to 'Explain the output to the user' directly. A malicious feature flag name or value could contain instructions to redirect the agent's behavior.
Audit Metadata
Risk Level
MEDIUM
Analyzed
Feb 15, 2026, 08:35 PM