---
id: CVE-2026-61612
title: CKAN MCP Server is a tool for querying CKAN open data portals
summary: >-
  CKAN MCP Server is a tool for querying CKAN open data portals. Prior to
  version 0.4.108, the SSRF guard `validateServerUrl` (added for CVE-2026-33060,
  extended for CVE-2026-53509) validates only the hostname string and never
  resolves DNS…
severity: medium
cvss: 5.7
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N'
cwe:
  - CWE-918
vendor: ondata
product: ckan-mcp-server
affected:
  - ckan-mcp-server @aborruso/ckan-mcp-server
patched:
  - '@aborruso/ckan-mcp-server 0.4.108'
published: '2026-09-21'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T21:25:27.050'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-61612'
references:
  - url: 'https://github.com/advisories/GHSA-3xm7-qw7j-qc8v'
    label: security-advisories@github.com
  - url: 'https://github.com/advisories/GHSA-g84h-j7jj-x32p'
    label: security-advisories@github.com
  - url: >-
      https://github.com/ondata/ckan-mcp-server/commit/bb7439b553b9f965adc3d43bcd415c42eebe2f40
    label: security-advisories@github.com
  - url: 'https://github.com/ondata/ckan-mcp-server/releases/tag/v0.4.108'
    label: security-advisories@github.com
  - url: >-
      https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-798p-78g2-v556
    label: security-advisories@github.com
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-61612'
  - url: 'https://github.com/advisories/GHSA-798p-78g2-v556'
tags:
  - nvd
  - cve.org
  - ghsa
  - npm
epss: 0.00234
epssPercentile: 0.12806
aliases:
  - GHSA-798p-78g2-v556
ecosystem: npm
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-21T19:40:39.811302Z'
ingestedAt: '2026-09-21T17:49:53.178Z'
---

## Overview

CKAN MCP Server is a tool for querying CKAN open data portals. Prior to version 0.4.108, the SSRF guard `validateServerUrl` (added for CVE-2026-33060, extended for CVE-2026-53509) validates only the hostname string and never resolves DNS. Any caller-supplied `server_url` whose hostname *resolves* to an internal address passes the guard, so the server issues requests to loopback and cloud metadata (`169.254.169.254`). This is a third bypass of the same guard, and it reaches IMDS — strictly more than CVE-2026-53509, which only reached loopback. Version 0.4.108 contains an updated fix.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-61612)

Affected packages:

- `@aborruso/ckan-mcp-server <= 0.4.107`

Patched in:

- `@aborruso/ckan-mcp-server 0.4.108`

Source: https://github.com/advisories/GHSA-798p-78g2-v556