{"items":[{"id":"NVI-00017612","kind":"vulnerability","title":"@aborruso/ckan-mcp-server: SSRF via base_url allows access to internal networks (Potential fix bypass of CVE-2026-33060)","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-g84h-j7jj-x32p","CVE-2026-53509"],"plain_summary":"GitHub lists this reviewed advisory for @aborruso/ckan-mcp-server. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-2e59aa252ab36577a8913f36b2070058"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-07-07T19:35:58.000Z","value":"5.7 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-2e59aa252ab36577a8913f36b2070058"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-2e59aa252ab36577a8913f36b2070058","url":"https://github.com/advisories/GHSA-g84h-j7jj-x32p","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-g84h-j7jj-x32p","publisher":"GitHub Advisory Database","observed_at":"2026-11-04T23:34:51.634Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-2e59aa252ab36577a8913f36b2070058"],"technology":"@aborruso/ckan-mcp-server","known_exclusions":[],"conditions_summary":"### Summary\nA known vulnerability CVE-2026-33060 indicated tools including ckan_package_search and sparql_query that accept a base_url parameter had the risk of making HTTP requests to arbitrary endpoints without restriction. A fix was applied to filter out ip addresses. However, a method to bypass exists.\n\n### Details\nCKAN MCP Server validates caller-supplied CKAN server URLs by inspecting only the parsed hostname string before issuing outbound HTTP requests. In `src/utils/http.ts`, hostname aliases such as `ip6-localhost` are not equal to `localhost`, are not dotted IPv4 literals, and are not bracketed IPv6 literals, so they pass the SSRF filter but can resolve to loopback when the server performs the request. A remote MCP caller that can invoke CKAN tools with a `server_url` can therefore make the server connect to local or private addresses and, for CKAN-shaped responses, receive response-derived data.\n\n### Fix\nReplaced the single `hostname === 'localhost'` check with a blocked-hostname `Set` covering `ip6-localhost` and `ip6-loopback`. Patched in commit `c761045a1b7c5f40d2626540dd2ef1d4feb91f8c`.\n\n---\n@aborruso/ckan-mcp-server thanks **hibrian827** for responsibly disclosing t","public_affected_ranges":["< 0.4.106"]}],"null_published_at":"2026-11-05T19:10:21.426Z","source_updated_at":"2026-07-07T19:35:58.000Z","source_disclosed_at":"2026-07-07T19:35:57.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-04T23:34:51.634Z"}],"next_cursor":null,"snapshot_revision":"42594"}