CVE-2026-33060 CKAN MCP Server: SSRF via base_url allows access to internal networks
Attackers can exploit SSRF in CKAN MCP Server to access internal networks and steal cloud metadata credentials via prompt injection.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-33060?
CVE-2026-33060 is a medium-severity server-side request forgery vulnerability in ondata ckan-mcp-server, published on 20 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-918
Which versions are affected by CVE-2026-33060?
2 open source packages ship an affected version, including @aborruso/ckan-mcp-server. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
@aborruso/ckan-mcp-server npm | All versions | 0.4.85 |
@aborruso/ckan-mcp-server npm | All versions | 0.4.85 |
Products include Ondata Ckan Mcp Server.
How do I fix CVE-2026-33060?
Upgrade @aborruso/ckan-mcp-server to 0.4.85 or later.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-33060 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33060 exists.
Sources
Also known as GHSA-3xm7-qw7j-qc8v.