markitdown

MEDIUM W011: Third-party content exposure detected (indirect prompt injection risk).

• Third-party content exposure detected (high risk: 0.90). The SKILL.md explicitly states the tool can fetch external content (e.g., "processing certain formats (like YouTube URLs) requires external network access to fetch the content") and converts that user-generated/public web content into Markdown that the agent would read and act on, exposing it to untrusted third-party input.