Security audit

Xiaohongshu Creator Marketplace (Pugongying) Note Details API

Security checks for vulnerabilities and agentic risk

Overview

This skill is a narrow JustOneAPI wrapper, but it passes the user's API token in a URL query parameter, which can expose credentials in logs or telemetry.

Review before installing if your JustOneAPI token has broad permissions, billing impact, or long lifetime. Use a scoped, revocable token if possible, avoid placing the token in chat or logs, and be aware that this skill sends the token and noteId to JustOneAPI with the token embedded in the request URL.

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:20
Finding: Authentication Token Transmitted in 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); } } function appendValue(searchParams, name, value) { if (Array.isArray(value)) { for (const item of value) { appendValue(searchParams, name, item); } return; } if (value && typeof value === "object") { searchParams.append(name, JSON.stringify(value)); return; } searchParams.append(name, String(value)); } ``` ### Technical Analysis The operation manifest explicitly classifies the authentication token as a query parameter. The helper copies the supplied ...[truncated 2754 chars]
Remediation: View remediation

SkillSpector

Vulnerability Patterns

Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access

Findings (4)

Undeclared Tool Scope

Medium

Category: MCP Least Privilege
Confidence: 87% confidence
Finding: The skill invokes a network-capable helper (node {baseDir}/bin/run.mjs ...) but does not declare any explicit tool scope such as permissions or allowed-tools. That creates an authorization gap: a host agent may not have enough metadata to constrain or review outbound network use, increasing the chance of unintended external requests with user-supplied data and secrets-adjacent context.
Content: No source excerpt is available for this finding.

Missing User Warnings

Medium

Category: Not specified by scanner
Confidence: 98% confidence
Finding: The skill sends the authentication token as a URL query parameter (token), which is then embedded in the full request URL. Query-string secrets are commonly exposed through logs, browser/history tooling, proxies, monitoring systems, and error telemetry, making accidental credential disclosure much more likely even when HTTPS is used.
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 a user authentication token and noteId to be sent to an external third-party API, but the manifest does not clearly warn users about that data transfer. This can lead to inadvertent disclosure of sensitive credentials or identifiers to an external service, especially if users assume the data stays within the local platform or first-party environment.
Content: No source excerpt is available for this finding.

Vague Triggers

Low

Category: Not specified by scanner
Confidence: 87% confidence
Finding: This manifest-style JSON describes what the skill does but provides no explicit trigger phrases, invocation constraints, or exclusion conditions. For manifest files, the absence of specific activation scope can make invocation behavior ambiguous if downstream systems derive triggers from broad descriptions.
Content: No source excerpt is available for this finding.

Static analysis

Detected: suspicious.secret_argv_exposure

Instructions pass high-value credentials through process argv.

Critical

Code: suspicious.secret_argv_exposure
Location: SKILL.md:42