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Security audit

Nyne.ai

Security checks for vulnerabilities and agentic risk

Overview

Review is needed because the required CLI can automatically change skills across other agents, an effect this skill does not explain.

Review the CLI's cross-agent skill changes before allowing setup. If those changes are unwanted, configure OO_SKILLS_SYNC_DISABLED=1 before CLI execution and use a separately reviewed installation. Confirm submitted identifiers, searches, and billable effects. The sole bundled file was fully inspected and the scanner's reference gaps were resolved, but the remote installer and hosted 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
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • 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
Findings (4)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
98% confidence
Finding

The supplied command performs remote script execution for an Oomol installation rather than any visible Nyne.ai data operation. Nothing in the supplied content establishes this installer as a supporting dependency for the declared purpose. The downloaded script's exact behavior cannot be determined from this chunk.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
97% confidence
Finding

The setup command pipes a remotely fetched, unpinned script directly into Bash without verifying its integrity; the PowerShell alternative follows the same execution pattern. If the hosting service or release pipeline is compromised, the script could execute arbitrary commands with the invoking user's permissions, exposing local files and credentials. Its legitimate dependency-installation purpose and missing-command prerequisite reduce exposure but do not remove this supply-chain risk.

Content

Scanner excerpt · SKILL.md (reported line 63)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 84)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

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 89)May include surrounding context.

md
## Resources

- Nyne.ai homepage: https://nyne.ai
- API documentation: https://api.nyne.ai/documentation/authentication