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Security audit

Typefully

Security checks for vulnerabilities and agentic risk

Overview

This Typefully skill is a coherent OOMOL connector wrapper with disclosed read, write, and delete actions, but users should be careful with its one-time CLI install command.

Before installing, confirm you trust OOMOL and Typefully access through your connected account. For first-time setup, prefer reviewing OOMOL's install guide or verifying the installer before running the curl or PowerShell one-liner. Require explicit confirmation before creating, updating, or deleting Typefully drafts.

A.I.G

Vulnerability Patterns
  • Skill Instruction HijackingAlters the agent's session goals or safety constraints when the skill loads
  • Agent Memory PoisoningWrites attacker-controlled rules into memory that affect later sessions
  • Remote Payload Retrieval and ExecutionFetches external code whose behavior can change after review
  • Embedded Malicious CodeShips malicious scripts inside the skill and executes them locally
  • Unauthorized Access and Privilege EscalationObtains permissions beyond the task's legitimate needs

SkillSpector

Vulnerability Patterns
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
Findings (2)

External Script Fetching

High
Category
Supply Chain
Confidence
96% confidence
Finding

The skill instructs users to install software by piping a remote script directly into bash, which executes unverified code from the network without an integrity check or review step. If the install endpoint, transport, or upstream distribution is compromised, this can lead to arbitrary code execution on the user's machine.

Content

Scanner excerpt · SKILL.md (reported line 62)May include surrounding context.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
94% confidence
Finding

The description says to use this skill for "ANY Typefully request" and "Whenever a task involves Typefully," which is extremely broad and lacks boundaries or exclusion conditions. This can overlap with many ordinary requests mentioning Typefully and does not specify when the skill should not activate.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.