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Security audit

Instatus

Security checks for vulnerabilities and agentic risk

Overview

The Instatus features have clear safeguards, but setup executes unverified remote installers and leaves broader agent-skill changes undisclosed.

Review and approve CLI installation separately, and use a verified, fixed release. Consider whether you trust OOMOL with the connected Instatus account and operation data. The publisher documents OO_SKILLS_SYNC_DISABLED=1 to prevent startup skill synchronization in its [command reference](https://github.com/oomol-lab/oo-cli/blob/main/docs/commands.md#environment-variables). Installer contents and exact release behavior remain unverified; no artifact-backed malicious intent was established.

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
  • Output HandlingUnvalidated Output Injection, Cross-Context Output, Unbounded Output
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
Findings (4)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
98% confidence
Finding

The supplied chunk installs Oomol CLI software and contains no Instatus operations or evidence connecting that installation to the declared purpose. Remote installer execution is not disclosed by the description. The downloaded script's contents and further effects cannot be determined from this chunk.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

Piping an HTTPS response directly into Bash executes mutable remote content with the invoking user's permissions, without verifying a pinned version, signature, or independently trusted digest. Compromise of the installation endpoint or its release infrastructure could therefore expose local files and credentials or enable persistence; the PowerShell alternative has the same underlying risk.

Content

Scanner excerpt · SKILL.md (reported line 69)May include surrounding context.

The setup workflow executes remote installation scripts without warning the user about remote code execution or system changes.

Medium
Category
Output Handling
Confidence
95% confidence
Finding

The missing-CLI fallback directs the agent to execute remotely supplied installation code without first explaining the local execution risk or obtaining explicit approval for system changes. Restricting this behavior to first-time setup reduces its frequency, but an Instatus request should not implicitly authorize arbitrary local installer execution.

Content

No source excerpt is available for this finding.

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 90)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