Mailgun

• Outcome: Review
• Latest audit: May 29, 2026 at 9:37 PM UTC
• Version:
  1.0.2

Overview

This appears to be a legitimate Mailgun integration, but it can send email and change live Mailgun resources without clear approval safeguards.

Install only if you trust Membrane and intend to connect it to Mailgun. Use the narrowest Mailgun permissions available, require explicit approval before sending email or creating, updating, or deleting resources, consider pinning or reviewing the CLI version instead of relying on @latest, and revoke the Membrane connection when it is no longer needed.

SkillSpector

By NVIDIA

Vulnerability Patterns

• Data Exfiltration: External Transmission, Env Variable Harvesting, File System Enumeration
• Prompt Injection: Instruction Override, Hidden Instructions, Exfiltration Commands
• 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

• Confidence: 88% confidence
• Finding: The skill advertises potentially destructive actions such as creating, updating, and deleting Mailgun resources without any guidance to require explicit user confirmation before execution. In an agentic setting, this increases the chance of unintended state-changing operations, especially when natural-language requests are ambiguous or the agent overgeneralizes user intent.

VirusTotal

63/63 vendors flagged this skill as clean.