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Security audit

drin-send-email

Security checks for vulnerabilities and agentic risk

Overview

This is a straightforward Drin email-sending skill with expected external email delivery behavior, but users should confirm message content and recipients before sending.

Install only if you intend agents to send email through Drin. Before use, confirm the sender domain, recipients, subject, body, and whether the content is appropriate to transmit to an external email provider; avoid secrets or regulated data unless you have explicit authorization and safeguards.

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

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
96% confidence
Finding

The skill does not warn that email body content, recipient addresses, sender details, and possibly templating data will be transmitted to an external third-party service. Without an explicit disclosure, an agent may send sensitive personal, financial, or authentication-related information off-platform without the user understanding the privacy and compliance implications.

Content

No source excerpt is available for this finding.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
90% confidence
Finding

The skill encourages use any time email needs to be delivered, but it does not require the agent to confirm user intent, sensitivity of content, or whether sending data to an external provider is appropriate. This can cause over-activation in contexts involving secrets, personal data, or actions the user did not explicitly authorize, increasing the risk of unintended disclosure through the Drin API.

Content

No source excerpt is available for this finding.