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Security audit

TikHub

Security checks for vulnerabilities and agentic risk

Overview

The TikHub workflow makes sense, but setup executes unverified remote code and the required CLI can install additional agent skills without this skill explaining that behavior.

Review the setup before installing. Prefer a vetted, pinned CLI installation and disable automatic skill synchronization with OO_SKILLS_SYNC_DISABLED=1 if you want only this integration. Use minimum TikHub scopes, protect account/key information, and monitor request charges. The exact remote installer and hosted connector behavior remain unverified; the artifacts do not establish malicious intent.

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
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • 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

High
Category
MCP Tool Poisoning
Confidence
98% confidence
Finding

The supplied command performs remote script execution rather than TikHub search or data retrieval. Although installation can be a supporting implementation detail, the supplied chunk establishes no relationship between this installer and TikHub. The installer's contents and any further effects cannot be determined from this command alone.

Content

No source excerpt is available for this finding.

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
84% confidence
Finding

The supplied chunk performs only a CLI login operation and does not identify TikHub or implement the declared data-access purpose. Authentication could support a TikHub integration, but no such connection is established here; login is the entire supplied behavior rather than a supporting step in a demonstrated TikHub workflow.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

The fallback installation command pipes a remotely fetched, unpinned script directly into Bash without an independent integrity check; the PowerShell alternative has the same weakness. Compromise of the distribution endpoint or its publishing pipeline could execute arbitrary code with the agent process's permissions, exposing accessible files and credentials. Its legitimate setup purpose and missing-CLI prerequisite limit exposure but do not remove the risk.

Content

Scanner excerpt · SKILL.md (reported line 61)May include surrounding context.

Autonomous Decision Making

Medium
Category
Excessive Agency
Confidence
80% confidence
Finding

Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.

Content

Scanner excerpt · SKILL.md (reported line 82)May include surrounding context.

md
- **`OOMOL_INSUFFICIENT_CREDIT`** — OOMOL billing stop. Recharge at `https://console.oomol.com/billing/token-recharge` before retrying.

- **HTTP 402 without `OOMOL_INSUFFICIENT_CREDIT`** — the third-party account itself has no active plan or credit. Report the provider error message as is; do not ask the user to recharge OOMOL.

## Resources