CVE-2026-33060
Description
CKAN MCP Server is a tool for querying CKAN open data portals. Versions prior to 0.4.85 provide tools including ckan_package_search and sparql_query that accept a base_url parameter, making HTTP requests to arbitrary endpoints without restriction. A CKAN portal client has no legitimate reason to contact cloud metadata or internal network services. There is no URL validation on base_url parameter. No private IP blocking (RFC 1918, link-local 169.254.x.x), no cloud metadata blocking. The sparql_query and ckan_datastore_search_sql tools also accept arbitrary base URLs and expose injection surfaces. An attack can lead to internal network scanning, cloud metadata theft (IAM credentials via IMDS at 169.254.169.254), potential SQL/SPARQL injection via unsanitized query parameters. Attack requires prompt injection to control the base_url parameter. This issue has been fixed in version 0.4.85.
How to fix
- ondata ckan_mcp_server0.4.85 or later
- @aborruso/ckan-mcp-server0.4.85 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ondata ckan_mcp_server | v < 0.4.85 | 0.4.85 |
| @aborruso/ckan-mcp-servernpm | v < 0.4.85 | 0.4.85 |
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Attack Surface Management
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