Bigmailer

• Outcome: Review
• Latest audit: May 29, 2026 at 9:37 PM UTC
• Version:
  1.0.4

Overview

This appears to be a legitimate BigMailer integration, but it gives an agent broad authenticated power to change live marketing data without clear confirmation guardrails.

Install only if you trust Membrane and the CLI with the connected BigMailer account. Use the least-privileged BigMailer account available, review actions before running them, and require explicit confirmation before any create, update, delete, campaign, automation, billing, or bulk-contact operation.

SkillSpector

By NVIDIA

Vulnerability Patterns

• Trigger Abuse: Overly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
• Prompt Injection: Instruction Override, Hidden Instructions, Exfiltration Commands
• Data Exfiltration: External Transmission, Env Variable Harvesting, File System Enumeration
• Privilege Escalation: Excessive Permissions, Sudo/Root Execution, Credential Access
• Supply Chain: Unpinned Dependencies, External Script Fetching, Obfuscated Code

Findings (2)

Vague Triggers

Medium

• Confidence: 89% confidence
• Finding: The activation guidance is overly broad ('use when the user wants to interact with BigMailer data'), which can cause the skill to trigger on routine requests without clear scoping or confirmation. In a skill capable of listing, creating, and updating records, broad activation increases the chance of unnecessary external access or unintended actions against a live BigMailer account.

Missing User Warnings

Medium

• Confidence: 91% confidence
• Finding: The skill documents write-capable actions such as creating lists, fields, contacts, and updating contacts, but does not warn that these operations can modify production marketing data. Without explicit cautions or confirmation requirements, an agent may perform destructive or privacy-impacting changes too readily in response to ambiguous user prompts.

VirusTotal

64/64 vendors flagged this skill as clean.