Back to skill

Security audit

Pg Job Queue Free

Security checks for vulnerabilities and agentic risk

Overview

This PostgreSQL queue skill is mostly documentation, but it asks for broad write and command execution capability without tightly limiting when those powers should be used.

Review before installing. Use this only for PostgreSQL job-queue design or explicitly approved database work, and do not let it run shell commands, network checks, callbacks, or database mutations unless you intentionally requested that action and understand the target environment.

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
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • 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 (4)

Description-Behavior Mismatch

Medium
Category
Not specified by scanner
Confidence
93% confidence
Finding

The skill presents itself as a knowledge-base assistant, but the content expands its scope into create/query/export operations and command-driven diagnostics. This mismatch can cause an agent or user to grant broader operational trust than intended, increasing the chance of unintended database changes or shell-assisted actions under the guise of documentation-only behavior.

Content

No source excerpt is available for this finding.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
96% confidence
Finding

The trigger condition is overly broad, covering general data-analysis and reporting scenarios far beyond the stated queue-design purpose. Overbroad activation increases the likelihood that the skill is invoked in unrelated contexts, where its operational hints and tool permissions may produce confusing, unsafe, or unnecessary actions.

Content

No source excerpt is available for this finding.

Intent-Code Divergence

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The document claims no extra dependencies and describes itself as a pure knowledge-base skill, yet other sections instruct environment validation, connectivity checks, and real-world diagnostics. This inconsistency can mislead execution frameworks into enabling external interactions that users would not expect from a supposedly passive advisory skill.

Content

No source excerpt is available for this finding.

Context-Inappropriate Capability

Medium
Category
Not specified by scanner
Confidence
92% confidence
Finding

The error-handling guidance introduces ping-based network diagnostics and firewall/proxy troubleshooting, which are outside the core purpose of PostgreSQL queue design guidance. Even if framed as troubleshooting, this broadens the skill into host and network probing behavior, which can be abused for reconnaissance or trigger unsafe command execution in connected agent environments.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.