Security audit

IMDb 'Did You Know' Insights API

Security checks for vulnerabilities and agentic risk

Overview

This skill is narrowly focused on an IMDb lookup API, but it sends the user's JustOneAPI token in the URL query string, which increases the chance of token exposure in logs or monitoring systems.

Review this before installing if the JustOneAPI token has meaningful quota, billing, or account scope. Use a narrowly scoped, revocable token if possible, avoid putting token-bearing URLs in logs or tickets, and rotate the token if it may have been exposed.

A.I.G

Vulnerability Patterns

Insecure Skill Coding PracticesFinds exploitable flaws such as hardcoded secrets or command injection
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

Findings (1)

T09 · Insecure Skill Coding Practices

Warning

Location: bin/run.mjs:19
Finding: API Authentication Token Transmitted in the URL Query String
Content: View full analysis
parameter.name === "token"); if (!tokenParam || params.token !== undefined) { return; } if (!cliToken) { fail("--token is required for this operation.", { operationId: operation.operationId, }); } params.token = cliToken; } ``` ```js function applyQueryParams(operation, params, url) { for (const parameter of operation.parameters.filter((item) => item.location === "query")) { const value = params[parameter.name]; if (value === undefined) { continue; } appendValue(url.searchParams, parameter.name, value); } } ``` The resulting URL, including the token, is sent to the fixed JustOneAPI HTTPS endpoint: ```js let response; try { response = await fetch(url, requestInit); } catch (error) { fail("Network request failed.", { cause: error instanceof Error ? error.message : String(error), ...[truncated 2600 chars]
Remediation: View remediation

SkillSpector

Vulnerability Patterns

Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access

Findings (6)

Undeclared Tool Scope

Medium

Category: MCP Least Privilege
Confidence: 70% confidence
Finding: Without declared permissions the skill's intent is opaque and cannot be validated.
Content: No source excerpt is available for this finding.

Missing User Warnings

Medium

Category: Not specified by scanner
Confidence: 95% confidence
Finding: The skill requires an authentication token to be supplied as a query parameter and then appends it into the request URL. Query-string credentials are routinely exposed through logs, browser/history tooling, reverse proxies, monitoring systems, and error reporting, making token leakage more likely than if the token were sent in an Authorization header.
Content: No source excerpt is available for this finding.

Missing User Warnings

Medium

Category: Not specified by scanner
Confidence: 96% confidence
Finding: Documenting an authentication token as a query parameter encourages credential transmission in URLs, which are commonly logged by clients, proxies, gateways, browser history, and monitoring systems. Even though this is API documentation rather than executable code, it normalizes an unsafe auth pattern and increases the chance of accidental token exposure during routine use.
Content: No source excerpt is available for this finding.

Natural-Language Policy Violations

Low

Category: Not specified by scanner
Confidence: 88% confidence
Finding: The languageCountry parameter defaults to en_US, which means the skill will select English (US) when the user does not choose a locale. This is a natural-language locale policy concern because it forces a specific language/region preference by default rather than requiring user selection or explicit opt-in.
Content: No source excerpt is available for this finding.

Natural-Language Policy Violations

Low

Category: Not specified by scanner
Confidence: 88% confidence
Finding: This manifest sets a default languageCountry value of en_US, which causes the skill to prefer a specific language/locale unless the caller overrides it. The file does list other supported locales, but it does not indicate user choice or opt-in for the default, which can conflict with locale preference policies.
Content: No source excerpt is available for this finding.

Natural-Language Policy Violations

Low

Category: Not specified by scanner
Confidence: 82% confidence
Finding: The parameter documentation sets en_US as the default language/country preference, which imposes a specific locale when the user does not choose one. The file does not state that users can or should select their preferred locale before the default is applied.
Content: No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.