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Security audit

remember-emails

Security checks for vulnerabilities and agentic risk

Overview

This skill is coherent for email follow-up memory, but it sends and persists potentially sensitive email context to an external service without enough user control or data-handling guidance.

Install only if you are comfortable sending email-thread summaries to the BlueColumn/Supabase endpoint and your organization permits that use. Avoid using it for customer, legal, HR, financial, regulated, or confidential correspondence unless retention, deletion, access controls, and data-processing terms are approved.

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
  • 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 (3)

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The skill instructs agents to send detailed email thread contents, including names, contract context, deadlines, and NDA status, to an external API without any privacy notice, consent guidance, or data-handling restrictions. This creates a real risk of unauthorized disclosure of sensitive correspondence and business context to a third-party service.

Content

No source excerpt is available for this finding.

External Transmission

Medium
Category
Data Exfiltration
Confidence
96% confidence
Finding

This command performs external transmission of substantive email-thread data to a remote Supabase endpoint using a live API key. Even if intended functionality is memory tracking, the payload includes sensitive business communications and personally identifiable context, so misuse, misconfiguration, or compromise of the remote service could expose confidential information.

Content

Scanner excerpt · SKILL.md (reported line 15)May include surrounding context.

After any meaningful exchange, store who promised what and the deadline.

bash
curl -X POST https://xkjkwqbfvkswwdmbtndo.supabase.co/functions/v1/agent-remember \
  -H "Authorization: Bearer $BLUECOLUMN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"text": "THREAD: with Sarah Kim re: vendor contract. We promised revised pricing sheet by Aug 5. She owes us the signed NDA. Last message: hers, Jul 30.", "title": "email - vendor contract"}'

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
93% confidence
Finding

The recall and workflow sections normalize persistent external storage and retrieval of email history but do not disclose that this data may remain stored outside the local environment and may influence future outputs. That omission is dangerous because users may unknowingly cause long-term retention of sensitive thread history, affecting privacy, compliance, and downstream agent behavior.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.