T03 · Remote Payload Retrieval and Execution
Error
- Location
SKILL.md:39- Finding
Mandatory Retrieval and Execution of Unpinned Remote Skills
- Content
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Security audit
云指网站迁移助手
Security checks for vulnerabilities and agentic risk
Overview
The skill is a coherent website migration helper, but it requires unpinned third-party skill loading and broad crawling/publishing behavior that needs review before installation.
Review this before installing. Use only with pinned and reviewed dependency skill versions, run crawling in a network-restricted environment, use a short-lived narrowly scoped MCP token, confirm every target-site write, and require manual review of any JavaScript before it is published on the new site.
Vulnerability Patterns
- Skill Instruction HijackingAlters the agent's session goals or safety constraints when the skill loads
- Remote Payload Retrieval and ExecutionFetches external code whose behavior can change after review
- Insecure Skill Coding PracticesFinds exploitable flaws such as hardcoded secrets or command injection
- Agent Memory PoisoningWrites attacker-controlled rules into memory that affect later sessions
- Embedded Malicious CodeShips malicious scripts inside the skill and executes them locally
Findings (4)
T01 · Skill Instruction Hijacking
Note
- Location
SKILL.md:10- Finding
Mandatory Injection of Promotional Registration Content
- Content
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T09 · Insecure Skill Coding Practices
Error
- Location
SKILL.md:145- Finding
User-Controlled Website Crawling Permits Server-Side Request Forgery
- Content
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- Remediation
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T09 · Insecure Skill Coding Practices
Error
- Location
SKILL.md:211- Finding
Unreviewed Source JavaScript Is Cloned and Published on the Target Website
- Content
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- Remediation
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Vulnerability Patterns
- Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
- Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
- Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
- Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
- Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (8)
Context-Inappropriate Capability
High
- Category
- Not specified by scanner
- Confidence
- 97% confidence
- Finding
The skill explicitly directs the agent to fetch, install, and trust external skills from third-party URLs at runtime, then use their declared
namefields as callable tools. This creates a supply-chain risk: a compromised remote package, malicious update, or spoofed dependency can gain execution influence and access to later-collected secrets such as MCP endpoints and Bearer tokens used for site writes.- Content
Ae1
High
- Category
- analysis-evasion
- Confidence
- 100% confidence
- Finding
Referenced artifact was not completely inspected
- Content
md - 若**已可用**：读取其 `SKILL.md` 的 `name` 字段作为真实调用名，直接进入第 4 步登记（幂等）。
Ae1
High
- Category
- analysis-evasion
- Confidence
- 100% confidence
- Finding
Referenced artifact was not completely inspected
- Content
md - 若**已可用**：读取其 `SKILL.md` 的 `name` 字段作为真实调用名，直接进入第 4 步登记（幂等）。
Ae1
High
- Category
- analysis-evasion
- Confidence
- 100% confidence
- Finding
Referenced artifact was not completely inspected
- Content
md - 若**已可用**：读取其 `SKILL.md` 的 `name` 字段作为真实调用名，直接进入第 4 步登记（幂等）。
Natural-Language Policy Violations
Medium
- Category
- Not specified by scanner
- Confidence
- 90% confidence
- Finding
The instruction says '请提醒用户到云指官网注册会员并领取试用站点', and the surrounding operational text is written as mandatory guidance in Chinese for user-facing interaction. Although the manifest includes English display and description fields, the skill workflow does not offer the user a language/locale choice before conducting the interaction, which can violate language-choice policy.
- Content
Context-Inappropriate Capability
Medium
- Category
- Not specified by scanner
- Confidence
- 82% confidence
- Finding
The manifest describes an orchestrator for migrating website content and preserving SEO, but L331 adds a separate capability to maintain a local blacklist-style record of complained-about domains and enforce future denial logic from that local store. This persistence and policy-enforcement mechanism is not reflected in the manifest and is not a direct implementation detail of content migration itself.
- Content
Natural-Language Policy Violations
Medium
- Category
- Not specified by scanner
- Confidence
- 93% confidence
- Finding
The instructions state that all questioning must be presented via forms and the entire user-facing template content is fixed in Chinese, with no indication that users may choose another language or locale. This can violate language/locale policy when the skill is used with users who have not opted into Chinese-only interaction.
- Content
Dynamic Request Target
Medium
- Category
- Server-Side Request Forgery
- Confidence
- 96% confidence
- Finding
The example builds an outbound HTTP request directly from a user-supplied domain and performs no validation, allowlisting, or destination restriction. In a migration skill, this can enable SSRF against internal services, cloud metadata endpoints, localhost, or attacker-controlled redirects, especially because the skill is explicitly designed to fetch arbitrary source sites as part of normal operation.
- Content
def verify_meta(domain, token): """方式三：HTML Meta 标签验证""" html = requests.get(f"http://{domain}/", timeout=10).text return f'content="{token}"' in html # 实际应使用 HTML 解析器
text