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Security audit

HeyGen

Security checks for vulnerabilities and agentic risk

Overview

This skill is a coherent HeyGen connector wrapper, but users should be careful with its one-line CLI installer and confirm any write or delete actions.

Install only if you are comfortable using OOMOL as the intermediary for your HeyGen account. Prefer reviewing the official oo CLI installation instructions before running the curl/PowerShell installer, and require explicit confirmation before the skill uploads, generates, or deletes HeyGen content.

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
98% confidence
Finding

The skill instructs users to install software by piping a remotely fetched script directly into bash, which creates a supply-chain and remote code execution risk if the server, transport, or script content is compromised. Because the command is presented as a remediation path inside the skill, an agent or user may execute it with little scrutiny when setup fails.

Content

Scanner excerpt · SKILL.md (reported line 71)May include surrounding context.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
97% confidence
Finding

The description says to use this skill for "ANY HeyGen request" and "Whenever a task involves HeyGen," which is a very broad activation condition. While domain-scoped to HeyGen, it does not define clearer boundaries, exclusions, or examples of when the skill should not activate, increasing the chance of over-invocation.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.