CVE-2026-33060: @aborruso/ckan mcp server SSRF Vulnerability
MODERATECVE-2026-33060 is a MODERATE (CVSS 5.7) ssrf vulnerability (CWE-918: Server-Side Request Forgery (SSRF)) affecting @aborruso/ckan mcp server libraries in the npm ecosystem. The issue involves ssrf in @aborruso/ckan-mcp-server via base_url allows access to internal networks. Remediation is available by upgrading affected packages to version 0.4.85.
CVE-2026-33060 at a Glance
Security Impact
CVSS: 5.7
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N).
How to Fix CVE-2026-33060
To remediate this vulnerability, upgrade all affected @aborruso/ckan mcp server dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
npm install @aborruso/ckan-mcp-server@0.4.85Run the following command in your project directory to verify that all resolved dependencies use the patched release:
npm ls @aborruso/ckan-mcp-serverHow to Check if You Are Affected
To determine whether your Node.js application is affected by CVE-2026-33060, inspect your project dependencies using npm:
npm ls @aborruso/ckan-mcp-serverAnalyze the terminal output to locate any version of @aborruso/ckan mcp server in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.4.85), your application is affected.
Note: The npm ls @aborruso/ckan-mcp-server command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-918: Server-Side Request Forgery (SSRF), where the web server receives a url or similar request from an upstream component and retrieves the contents of this url, but it does not sufficiently ensure that the request is being sent to the expected destination. In @aborruso/ckan mcp server, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2026-33060 Affected @aborruso/ckan mcp server Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
@aborruso/ckan-mcp-server
|
npm |
< 0.4.85
|
0.4.85
|
References
Frequently Asked Questions
What is CVE-2026-33060?
Which @aborruso/ckan mcp server versions are affected?
What version fixes CVE-2026-33060?
Is @aborruso/ckan-mcp-server affected?
What is the CVSS score of CVE-2026-33060?
What CWE is associated with CVE-2026-33060?
How can I check npm dependencies for CVE-2026-33060?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-3xm7-qw7j-qc8v",
"modified" : "2026-04-24T20:46:15Z",
"published" : "2026-03-18T12:59:42Z",
"aliases" : [ "CVE-2026-33060" ],
"summary" : "SSRF in @aborruso/ckan-mcp-server via base_url allows access to internal networks",
"details" : "## Summary\n\nThe `@aborruso/ckan-mcp-server` MCP server provides 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.\n\n## Severity\n\nAttack complexity is HIGH because exploitation requires prompt injection via malicious content (webpage, document) while the victim's AI assistant has this MCP server connected.\n\n## Proof of Concept\n\nTested inside Docker-in-Docker isolated environment with canary HTTP sidecar.\n\n```json\n{\"tool\": \"ckan_package_search\", \"arguments\": {\"base_url\": \"http://canary:8080/ssrf\", \"query\": \"test\"}}\n```\n**Result**: Canary received **9 HTTP requests**. The high request volume confirms no rate limiting or URL validation.\n\n## Root Cause\n\nNo 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.\n\n## Impact\n\nInternal 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.\n\n## Recommended Fix\n\n1. Validate `base_url` against a configurable allowlist of permitted CKAN portals\n2. Block private IP ranges (RFC 1918, link-local)\n3. Block cloud metadata endpoints (169.254.169.254)\n4. Sanitize SQL input for datastore queries\n5. SPARQL endpoint allowlist\n\n## Credit\n\nDiscovered by [Andrei Boldyrev](https://github.com/abcgco) of Munio Security Research using [munio](https://munio.dev)",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "npm",
"name" : "@aborruso/ckan-mcp-server"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "0.4.85"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-3xm7-qw7j-qc8v"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-33060"
}, {
"type" : "WEB",
"url" : "https://github.com/kysely-org/kysely/commit/0a602bff2f442f6c26d5e047ca8f8715179f6d24"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/ondata/ckan-mcp-server"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-918" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2026-03-18T12:59:42Z",
"nvd_published_at" : "2026-03-20T08:16:11Z"
}
}