CVE-2026-46341
CVE-2026-46341 · Apify MCP server: Domain Allowlist Bypass in fetch-apify-docs via String Prefix Matching
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 6.1 · Medium · EPSS 0.2% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
apify-mcp-server
- Versions
- < 0.9.21: Affected
No fix published
@apify/actors-mcp-server npm
- Affected ranges
- SEMVER: < 0.9.21
Update to 0.9.21
Original sources
- https://github.com/apify/apify-mcp-server/security/advisories/GHSA-jwp7-wg77-3w9v
- https://github.com/apify/apify-mcp-server/pull/781
- https://github.com/apify/apify-mcp-server/commit/e39bdee530da1db0b3b3d3713558b33c9608e629
- https://github.com/apify/apify-mcp-server/releases/tag/v0.9.21
- https://nvd.nist.gov/vuln/detail/CVE-2026-46341