CVE-2026-33060: SSRF in CKAN MCP Server via unvalidated base_url parameter
Versions of the CKAN MCP Server prior to 0.4.85 accepted an arbitrary base_url in tools such as ckan_package_search, sparql_query and ckan_datastore_search_sql, with no URL validation or blocking of private/link-local addresses. An attacker able to influence the parameter via prompt injection could scan internal networks, steal cloud metadata credentials from 169.254.169.254, or attempt SQL/SPARQL injection; fixed in 0.4.85.
Disclosed 20 March 2026 · Record updated 13 September 2026
Impact
Potential internal network scanning, theft of cloud IAM credentials via instance metadata service, and SQL/SPARQL injection through unsanitized query parameters.
Our coverage
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Sources
- nvd.nist.govhttps://nvd.nist.gov/vuln/detail/CVE-2026-33060
