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Security audit

Dead Letter Queue Analyzer

Security checks for vulnerabilities and agentic risk

Overview

This skill is a straightforward DLQ troubleshooting guide, but users should treat its replay command as a real production-changing action.

Install only if you are comfortable letting the agent inspect queue messages, which may contain sensitive data. Before using replay guidance, confirm the root cause is fixed, consumers are idempotent, and the target queue/rate are correct.

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
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
Findings (3)

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
92% confidence
Finding

The 'Use when' line includes phrases like 'why are messages failing' and 'message processing failures', which are broad enough to overlap with general debugging requests outside a DLQ-specific context. The description does not provide negative examples or explicit boundaries for when the skill should not activate, increasing the risk of unintended invocation.

Content

No source excerpt is available for this finding.

Description-Behavior Mismatch

Medium
Category
Not specified by scanner
Confidence
96% confidence
Finding

The manifest description is framed as analysis of dead letter queues: identifying failure patterns, root causes, and remediation strategies. However, the replay command includes an SQS start-message-move-task operation that actively changes queue state by moving messages, which goes beyond analysis into operational modification.

Content

No source excerpt is available for this finding.

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The replay guidance provides commands to move messages from a DLQ back to a live queue without prominent warnings about duplicate processing, replay storms, poison-message loops, or downstream side effects. In operational environments, an unsafe replay can trigger data corruption, repeated failures, service overload, or unintended business actions if messages are not idempotent and prevalidated.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.