Postmark

Security checks across malware telemetry and agentic risk

Overview

This is a disclosed Postmark integration that uses Membrane to manage email resources, with powerful send and template-management actions users should approve carefully.

Install only if you trust Membrane and the npm-distributed Membrane CLI. Use least-privilege Postmark access where possible, review recipients and message content before any send or batch send, confirm template updates/deletions explicitly, and revoke the Membrane connection when it is no longer needed.

SkillSpector

By NVIDIA

Vulnerability Patterns

Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep

Findings (1)

Missing User Warnings

Medium

Confidence: 84% confidence
Finding: The skill advertises destructive operations such as deleting templates and modifying outbound messaging state without warning about confirmation, least privilege, or potential production impact. In an agent setting, this increases the chance that a user’s ambiguous request could lead to irreversible or service-affecting changes without adequate safeguards.

VirusTotal

65/65 vendors flagged this skill as clean.

View on VirusTotal