Security audit

Hfmirror Trending En

Security checks for vulnerabilities and agentic risk

Overview

This skill does what it says: it fetches public HF-Mirror trending data and writes a Markdown report, with a report-content safety caveat.

Install only if you are comfortable with the agent making a public request to hf-mirror.com and creating or overwriting a Markdown report file. Treat generated report text as untrusted external data, especially resource names or titles, and avoid letting any text inside the report change the agent's instructions.

A.I.G

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

Findings (1)

other

Warning

Location: scripts/summarize.py:44
Finding: Untrusted API Metadata Is Embedded in Agent-Consumed Markdown Without Neutralization
Content: View full analysis
Remediation: View remediation
", ">") return text ``` Apply this function to all remotely sourced textual fields before adding them to `output`. ]]>

SkillSpector

Vulnerability Patterns

MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code

Findings (2)

Undeclared Tool Scope

Medium

Category: MCP Least Privilege
Confidence: 93% confidence
Finding: The skill advertises and instructs use of network access plus file read/write behavior, but it does not declare any explicit tool scope such as permissions or allowed-tools. This creates a capability/transparency gap: an agent or platform may execute broader actions than a reviewer or user expects, increasing the risk of unintended outbound requests or local file modification.
Content: No source excerpt is available for this finding.

Natural-Language Policy Violations

Medium

Category: Not specified by scanner
Confidence: 95% confidence
Finding: The description explicitly states that the skill generates structured Markdown reports in English. This is a natural-language locale constraint presented as default behavior, and the file does not mention any user opt-in or option to choose another language.
Content: No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.