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Security audit

Alibaba Quark Scan Free

Security checks for vulnerabilities and agentic risk

Overview

This appears to be an image scanning skill, but its activation and capability claims are broader and less consistent than its stated purpose.

Install only if you intend to send selected, non-sensitive images to Quark's scanning service. Do not let this skill activate for general security work, document conversion, or bulk file processing unless the publisher narrows the instructions and provides the referenced execution script clearly. Rotate the API key if exposed and manually clean temporary output images when finished.

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
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
Findings (5)

Vague Triggers

High
Category
Not specified by scanner
Confidence
96% confidence
Finding

The trigger condition says to auto-activate whenever a user needs 'Security'-related tasks, which is far broader than the skill's actual purpose. In an agent ecosystem with read/exec/write permissions, this can cause unintended invocation during sensitive workflows and may route confidential files or prompts into an external image-processing path without user intent.

Content

No source excerpt is available for this finding.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
89% confidence
Finding

The description uses broad 'Use when' language covering file processing, document conversion, format conversion, and content extraction without strict constraints. Overbroad routing guidance can make an agent select this skill outside its validated purpose, increasing the risk of processing unintended files or invoking external services on sensitive content.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
93% confidence
Finding

The description says '支持中文交互' as a default capability, and the document does not indicate that users may choose another language. This can violate language or locale policy when a skill appears to force or assume a specific interaction language without explicit user choice.

Content

No source excerpt is available for this finding.

Intent-Code Divergence

Medium
Category
Not specified by scanner
Confidence
97% confidence
Finding

The documentation explicitly advertises '批量扫描与导出' with export to JSON/CSV/Markdown, which implies multi-image processing. Later, the same file states '每次调用仅限单张图片,不支持批量处理', directly contradicting that earlier capability claim.

Content

No source excerpt is available for this finding.

Intent-Code Divergence

Medium
Category
Not specified by scanner
Confidence
98% confidence
Finding

The skill is narrowly scoped to image scanning/enhancement, but later claims it should activate for generic 'Security' tasks. That scope drift can cause the agent to invoke this skill in unrelated sensitive contexts, increasing the chance of unnecessary file handling, command execution, or transmission of user data to an external service.

Content

No source excerpt is available for this finding.