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Security audit

Quriiri

Security checks for vulnerabilities and agentic risk

Overview

The Quriiri workflow includes clear controls for sending messages, but its automatic setup executes unverified code downloaded from the internet.

Review the automatic installation step before use. Preinstall a reviewed, version-pinned CLI and require approval for further software installation. Quriiri requests pass through OOMOL; confirm SMS recipients, message text, and possible charges. The bundled instructions were fully inspected, but external installers and service implementations remain unverified.

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 (3)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
99% confidence
Finding

The supplied command executes an Oomol-hosted installation script, with no visible connection to Quriiri or its data operations. This is an undeclared capability involving an inconsistent resource, not an established supporting implementation detail. The downloaded script's contents and further effects are not available for assessment.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

The fallback pipes a remotely fetched, unpinned script directly into Bash without integrity verification or an explicit installation approval step; the PowerShell alternative has the same issue. If the distribution endpoint or its supply chain is compromised, the script can execute arbitrary code with the agent process's permissions, potentially accessing local files and credentials. Its legitimate dependency-setup purpose and missing-CLI condition reduce exposure but do not eliminate the risk.

Content

Scanner excerpt · SKILL.md (reported line 58)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 79)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