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Security audit

Linguapop

Security checks for vulnerabilities and agentic risk

Overview

The Linguapop workflow is well scoped, but its setup can execute unverified downloaded code without first asking you.

Review and approve CLI installation separately, preferably using a pinned release with verified integrity. Check whether it installs additional agent skills. OOMOL will mediate your Linguapop requests and connected credentials; confirm candidate details, email delivery, and callback destinations before sending invitations. The reviewed artifact does not establish malicious behavior, but the external installer remains uninspected.

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 command performs remote code execution for an apparent Oomol CLI installation, not Linguapop data operations. Nothing supplied establishes this installer as a supporting dependency for Linguapop. The downloaded script's contents are not provided, so its further behavior cannot be assessed.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

Piping a live HTTPS response directly into bash executes mutable remote code with the agent process's local privileges, without a pinned artifact or independent integrity verification. Compromise of the installer distribution could expose accessible files and credentials or enable persistence; the Windows download-and-execute alternative has the same underlying risk. The documented dependency and conditional fallback make this plausible setup behavior, but do not eliminate the supply-chain exposure.

Content

Scanner excerpt · SKILL.md (reported line 56)May include surrounding context.

The setup workflow executes downloaded 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 an installer without first obtaining approval for running downloaded code and changing the local environment. Confirmation requirements cover Linguapop writes but do not cover local installation, leaving an authorization gap even though this fallback only runs when the dependency is absent.

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 77)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