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Security audit

astro-sync

Security checks for vulnerabilities and agentic risk

Overview

ClawScan marks this skill benign because the reported findings are low probability and considered expected for its purpose, though the overall confidence is medium and the scan was partial.

The verdict is benign, not risk-free. Consider whether English-only polishing and an unpinned `npx astro` reference suit your needs. The scan was partial: some local references could not be resolved, so the evidence does not cover all referenced context.

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
  • Output HandlingUnvalidated Output Injection, Cross-Context Output, Unbounded Output
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
Findings (3)

The polishing step specifies English without user opt-in.

Medium
Category
Output Handling
Confidence
87% confidence
Finding

The instruction to fix grammar, spelling, and clarity "in English" imposes a language requirement without asking the user. The skill also handles Chinese history and literature articles, but does not justify an English-only constraint or explicitly preserve the source language.

Content

No source excerpt is available for this finding.

Autonomous Decision Making

Medium
Category
Excessive Agency
Confidence
75% confidence
Finding

Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.

Content

Scanner excerpt · SKILL.md (reported line 81)May include surrounding context.

md
quote any frontmatter value containing YAML-special characters — especially `: ` (colon + space).** An unquoted `description: Foo: bar` is parsed as a mapping and fails the build at content sync (`bad indentation of a mapping entry` / `mapping values are not allowed in this context`); Cloudflare then keeps the **previous** deployment, so the post never appears and search can't find it. Wrap the whole value in double quotes: `description: "Foo: bar"`. Applies to every field (`title`, `description`, …). This has recurred several times.
10. **Write the post** to `src/data/blog/<category>/<filename>` with the frontmatter followed by the polished body.
11. **Report** `postPath` and `imagesCopied` to the user.
12. **Commit & push (only after approval):** ask the user explicitly whether to commit. On approval, stage the post and any new images in `astro_journal`, commit with a concise message, and push to `origin`. Without approval, leave the changes uncommitted and say so.

## Verification

MCP server referenced without pinned version: 'npx astro'.

Medium
Category
MCP Rug Pull
Confidence
70% confidence
Finding

npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.

Content

No source excerpt is available for this finding.