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Security audit

RevenueCat

Security checks for vulnerabilities and agentic risk

Overview

The RevenueCat reads fit the stated purpose, but fallback setup executes an unverified remote installer without a clear user approval step.

Review and approve CLI setup separately before enabling this skill. Prefer a reviewed, verified CLI release and a RevenueCat key limited to the projects and read permissions you need. OOMOL will mediate access to sensitive customer and revenue data. The current CLI documents OO_SKILLS_SYNC_DISABLED to prevent automatic skill synchronization; confirm this control for your installed version. [CLI controls](https://github.com/oomol-lab/oo-cli/blob/main/docs/commands.md) The remote installers and exact downloaded runtime were not verified.

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
99% confidence
Finding

The supplied command performs remote software installation, not RevenueCat data searching or reading. Nothing in the chunk establishes that this installer is a supporting dependency for RevenueCat access. The downloaded script is not supplied, so its further actions cannot be assessed.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
99% confidence
Finding

Piping an unpinned remote installer directly into Bash executes whatever the endpoint returns without an independent integrity or authenticity check on the script. Compromise of the distribution infrastructure could therefore allow arbitrary code execution with the invoking user's privileges; HTTPS alone does not protect against a compromised legitimate source.

Content

Scanner excerpt · SKILL.md (reported line 66)May include surrounding context.

The setup workflow instructs the agent to execute downloaded installation scripts without warning the user about remote code execution or local system changes.

Medium
Category
Output Handling
Confidence
97% confidence
Finding

The fallback directs the agent to execute remotely downloaded Bash or PowerShell code without first obtaining informed approval for software installation and local system changes. Although conditional setup is legitimate, a read-oriented RevenueCat request does not itself authorize arbitrary installation code running with the agent's local privileges.

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 87)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