T09 · Insecure Skill Coding Practices
Warning
- Location
scripts/rag_content_enhancer.py:108- Finding
Unsanitized Remote Content Embedded in Generated Markdown
- Content
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Vulnerability Details
File Location:
scripts/rag_content_enhancer.py:108-109, 154, 287-301
Vulnerability Type: Untrusted remote content injection
Risk Level: MediumVulnerable Code
python return { "source": "wikipedia", "exists": True, "title": page.title, "summary": page.summary, "key_points": self._extract_key_points(page.summary), "url": page.fullurl, "retrieved_at": datetime.now().isoformat() }python papers.append({ "title": paper.title, "authors": [str(author) for author in paper.authors][:3], "summary": paper.summary[:300] + "..." if len(paper.summary) > 300 else paper.summary, "published": paper.published.strftime("%Y-%m") if paper.published else "unknown", "pdf_url": paper.pdf_url, "primary_category": paper.primary_category, "relevance_score": self._calculate_paper_relevance(paper, topic) })python enhanced = f"""# {topic} ## Real-Time Authority Validation **Generated At**: {datetime.now().strftime('%Y-%m-%d %H:%M')} **Authority Validation Time**: {authoritative_info['retrieved_at']} **Confidence**: {authoritative_info['confidence_score']:.0%} --- ## Authoritative Information ### Wikipedia Definition {authoritative_info['wikipedia'].get('summary', 'No relevant definition found')} **Key Points**: {chr(10).join([f'- {point}' for point in authoritative_info['wikipedia'].get('key_points', [])])} """Technical Analysis
The RAG enhancer retrieves Wikipedia summaries and arXiv abstracts and interpolates them directly into generated Markdown. The implementation does not escape Markdown metacharacters, remove raw HTML, validate embedded URLs, block remote images, or distinguish externally retrieved instructions from trusted application content.
Wikipedia and arXiv content must be treated as untrusted because external contributors can influence it. An attacker who can publish or modify content relevant to a requested topic may insert Mar ...[truncated 1946 chars]
- Remediation
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Remediation Suggestions
- Treat every Wikipedia and arXiv field as untrusted data.
- Escape Markdown control characters before interpolation.
- Strip raw HTML and disallow active elements, embedded images, and automatic resource loading.
- Permit only explicitly approved URL schemes such as
https. - Validate citation URLs against expected source domains before including them.
- Apply strict length limits to titles, summaries, authors, URLs, and key points.
- Place retrieved text inside clearly marked quotation blocks and state that it must not be interpreted as an instruction.
- If output is consumed by another agent, pass retrieved content through a separate data channel or structured field rather than concatenating it into the instruction context.
- Add tests containing malicious Markdown, raw HTML, embedded images, unsafe URL schemes, and prompt-injection phrases.
- Configure the final renderer to disable raw HTML and remote-resource loading.