CVE-2026-46341
Description
The Apify MCP server enables AI agents to extract data from websites using ready-made scrapers, crawlers, and automation tools available on the Apify Store. Prior to 0.9.21, the fetch-apify-docs tool in src/tools/common/fetch_apify_docs.ts validates allowlisted documentation domains with String.startsWith() rather than URL hostname comparison, allowing attacker-controlled URLs such as `https://docs.apify.com.evil.com/` and `https://[email protected]/` to pass the ALLOWED_DOC_DOMAINS check and return arbitrary fetched content to the LLM. This issue is fixed in version 0.9.21.
How to fix
- @apify/actors-mcp-server0.9.21 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| @apify/actors-mcp-servernpm | v < 0.9.21 | 0.9.21 |
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Attack Surface Management
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