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Security audit

Float

Security checks for vulnerabilities and agentic risk

Overview

The Float reads are appropriately scoped, but setup executes an unpinned remote installer without clear approval for its broader local changes.

Review setup before enabling this skill. Prefer installing a pinned, verified CLI separately, review its bundled agent-skill changes, and connect only the intended Float account. The supplied instructions show no malicious intent, but they do not adequately bound installation effects. Remote installer and hosted connector behavior 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
  • 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
96% confidence
Finding

The supplied command performs remote software installation rather than searching or reading Float data. Although installation can be a supporting implementation detail, the supplied chunk establishes no relationship between this Oomol installer and the declared Float functionality. The contents and further effects of the downloaded script are not visible and cannot be assessed.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

Piping an HTTPS response directly into bash executes mutable remote content without pinning or independent integrity verification; the PowerShell alternative has the same weakness. A compromised installer endpoint or release pipeline could execute attacker-controlled code with the agent's local privileges, although no such compromise is demonstrated here.

Content

Scanner excerpt · SKILL.md (reported line 59)May include surrounding context.

The setup workflow executes remotely downloaded installation scripts without warning about local system changes.

Medium
Category
Output Handling
Confidence
93% confidence
Finding

The missing-CLI fallback directs the agent to execute a remote installer without requiring user approval for local system changes. Although conditional and relevant to setup, this can turn a read-only Float request into installation and arbitrary code execution 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 80)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