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Security audit

APIVoid

Security checks for vulnerabilities and agentic risk

Overview

The APIVoid functions fit the description, but the required CLI can silently install lasting instructions into other agents without this skill explaining that effect.

Review the CLI setup before enabling this skill. Use a reviewed, fixed CLI release and decide whether you want its additional agent skills. Supporting versions provide OO_SKILLS_SYNC_DISABLED=1 to prevent startup skill synchronization; configure it before invoking the CLI. Submit only lookup data you intend to share with OOMOL and APIVoid, removing URL credentials or tokens. The external installers and server-side connector were not verified by this artifact review.

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 (6)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
99% confidence
Finding

The supplied command executes an external installer and contains no APIVoid interaction. Nothing in the supplied material establishes that this installer is a supporting dependency for APIVoid access. Its resource access and installation behavior therefore materially differ from the declared purpose. The downloaded script's contents and further effects are not available for assessment.

Content

No source excerpt is available for this finding.

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
97% confidence
Finding

The supplied code only invokes a CLI login command; it does not search or read APIVoid data. Authentication could support an APIVoid integration, but nothing in this chunk establishes that connection, so the observed behavior materially differs from the declared purpose.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

Piping a mutable HTTPS response directly into Bash executes whatever the installation endpoint supplies without review, version pinning, or artifact verification. Compromise of the provider's distribution infrastructure could therefore execute attacker-controlled code with the user's permissions; HTTPS does not protect against a compromised publisher. This is the same underlying installation risk identified in the setup-warning finding, not a separate exploit chain.

Content

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

Read actions are labeled safe without warning that lookup inputs are sent to external services.

Medium
Category
Output Handling
Confidence
90% confidence
Finding

Calling every read action safe conflates absence of state changes with absence of disclosure risk. Reputation and email lookups transmit their inputs through OOMOL to APIVoid, potentially exposing private addresses, internal hostnames, or secrets embedded in URLs; an explicit user request to check a public indicator reduces this concern but does not justify blanket permission for all lookup inputs.

Content

No source excerpt is available for this finding.

Setup executes downloaded installation scripts without warning about remote code execution or system changes.

Medium
Category
Output Handling
Confidence
95% confidence
Finding

The missing-CLI fallback directs execution of downloaded shell or PowerShell code without a separate approval step or integrity verification. This can modify the host and execute with the invoking user's permissions; its conditional, documented setup role reduces exposure but does not remove the supply-chain risk.

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