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Security audit

Plane

Security checks for vulnerabilities and agentic risk

Overview

This Plane integration needs review because its setup executes unverified downloads and its CLI can change agent skills beyond this integration.

Review and install a verified CLI release yourself before using this skill. Its publisher documents automatic skill synchronization; consider disabling it with OO_SKILLS_SYNC_DISABLED before invoking the CLI, as described in the [command reference](https://github.com/oomol-lab/oo-cli/blob/main/docs/commands.md#environment-variables). Review OOMOL's connected-account permissions and confirm each requested change. The sole bundled artifact was fully inspected, but the downloaded installers and hosted connector implementation remain unverified.

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
  • 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 (3)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
97% confidence
Finding

The supplied command installs an external CLI rather than performing Plane operations. Although dependency installation can be a supporting implementation detail, the chunk provides no evidence that this installer supports Plane functionality. Its visible behavior therefore materially differs from the declared purpose. The downstream installer's contents and effects cannot be determined from this chunk.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
96% confidence
Finding

The setup command pipes a remotely fetched, unpinned script directly into Bash without integrity verification; the PowerShell alternative has the same weakness. Compromise of the installer host or distribution pipeline could execute attacker-controlled code with the invoking user's privileges, exposing local files and credentials. Its legitimate dependency-installation purpose and missing-command trigger reduce exposure but do not establish the downloaded code's integrity.

Content

Scanner excerpt · SKILL.md (reported line 65)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 86)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