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Security audit

QuickChart

Security checks for vulnerabilities and agentic risk

Overview

The skill is mostly a straightforward QuickChart connector, but its fallback setup tells agents to execute remote installer scripts without verification.

Install only if you trust OOMOL and are comfortable using its oo CLI. Avoid running the pipe-to-shell installer blindly; prefer a verified installation path or inspect and verify the installer first. Review payloads before write-tagged actions, especially short URL creation.

A.I.G

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

SkillSpector

Vulnerability Patterns
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • 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)

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

The skill instructs users to install the CLI via curl ... | bash, which executes a remote script directly from the network without prior verification. If the distribution endpoint, DNS, TLS trust chain, or hosting account is compromised, this becomes an immediate arbitrary code execution path on the user's machine.

Content

Scanner excerpt · SKILL.md (reported line 57)May include surrounding context.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
92% confidence
Finding

The description says to use this skill for "ANY QuickChart request" and "Whenever a task involves QuickChart," which is extremely broad and lacks scope boundaries or exclusion examples. This can overlap with casual mentions of QuickChart and does not clearly define when the skill should not activate.

Content

No source excerpt is available for this finding.

Intent-Code Divergence

Medium
Category
Not specified by scanner
Confidence
94% confidence
Finding

The skill documentation marks build_chart_url and build_qr_url as [write] actions and states that [write] actions change QuickChart state. However, the descriptions for these actions say they only build and return image URLs, with build_chart_url explicitly saying it does so "without downloading the rendered image," which indicates a read/compute-style operation rather than a state change. This is an active contradiction in the file's own intent documentation.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.