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Security audit

视频生成 快马 Happyhorse 1.0

Security checks for vulnerabilities and agentic risk

Overview

ClawScan’s verdict is benign, with medium confidence: the available evidence reports no malicious behavior, but raises a mismatch between the advertised video features and observed CLI authentication commands, and the scan is incomplete.

The verdict is benign, but confidence is medium and the evidence is incomplete: Skillspector could not resolve several referenced items, and the external CLI package’s behavior was not verified. Before installing, consider whether you are comfortable setting up dLazy CLI authentication and relying on an unverified package; the scan does not establish that the advertised video features are implemented.

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
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • 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 (5)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
94% confidence
Finding

Authentication could support a video workflow, but the supplied chunk contains only a login command and no connection to Happy Horse or implementation of the declared video capabilities. Its sole observable operation therefore does not substantiate the declared purpose.

Content

No source excerpt is available for this finding.

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
92% confidence
Finding

The supplied code performs authentication rather than the advertised video operations. Authentication could be a supporting implementation detail, but this chunk provides no evidence connecting dlazy login to Happy Horse or its sub-model routing. No credential theft or other hidden behavior can be inferred from this command alone.

Content

No source excerpt is available for this finding.

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
91% confidence
Finding

Authentication could support a video workflow, but the supplied chunk contains only credential configuration and no connection to Happy Horse or its advertised operations. As supplied, its sole behavior materially differs from the declared purpose. There is no evidence of credential exfiltration or other hidden operations.

Content

No source excerpt is available for this finding.

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
80% confidence
Finding

The description promises specific video capabilities and automatic sub-model routing, but the only supplied code delegates an unspecified command to an external package. Nothing in the chunk connects that invocation to Happy Horse or its advertised modes. The external package could potentially implement those features, but its behavior is not supplied, so that relationship cannot be verified. This finding does not imply that the package is malicious.

Content

No source excerpt is available for this finding.

Whitespace Padding

Medium
Category
Prompt Injection
Confidence
70% confidence
Finding

Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.

Content

Scanner excerpt · SKILL-cn.md (reported line 129)May include surrounding context.

md
## 错误处理

| Code | 错误类型                         | 示例信息                                                                                                                 |
| ---- | -------------------------------- | ------------------------------------------------------------------------------------------------------------------------ |
| 401  | 未授权 (API Key缺失或无效)       | `ok: false, code: "unauthorized", message: "API key is missing or invalid"`                                                              |
| 501  | 缺少必填参数                     | `error: required option '--prompt <prompt>' not specified`                                                               |