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Security audit

ClickHouse

Security checks for vulnerabilities and agentic risk

Overview

The skill is a coherent ClickHouse connector, but its setup instructions tell the agent to run remote installer scripts directly, which deserves review before use.

Review the CLI installation path before installing. Prefer downloading the installer from OOMOL, verifying its source or checksum/signature if available, and approving installation explicitly. Also treat execute_query as capable of changing or deleting ClickHouse data and require clear confirmation for any non-read SQL.

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
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
Findings (2)

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

The skill instructs users to install software via curl ... | bash, which executes a remote script directly without verification. If the install endpoint, transport, or upstream distribution is compromised, arbitrary code could run on the host with the user's privileges.

Content

Scanner excerpt · SKILL.md (reported line 59)May include surrounding context.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
94% confidence
Finding

The description says to use this skill for "ANY ClickHouse request" and "Whenever a task involves ClickHouse," which is an extremely broad activation condition. It does not define boundaries, exclusions, or negative examples, so ordinary mentions of ClickHouse could trigger the skill unintentionally.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.