Medium severity5.7NVD Advisory· Published Sep 21, 2026· Updated Sep 24, 2026
CVE-2026-61612
CVE-2026-61612
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
@aborruso/ckan-mcp-servernpm | < 0.4.108 | 0.4.108 |
Affected products
1- Range: <0.4.108
Patches
Vulnerability mechanics
References
7- github.com/advisories/GHSA-3xm7-qw7j-qc8vnvdADVISORY
- github.com/advisories/GHSA-798p-78g2-v556ghsaADVISORY
- github.com/advisories/GHSA-g84h-j7jj-x32pnvdADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-61612ghsaADVISORY
- github.com/ondata/ckan-mcp-server/commit/bb7439b553b9f965adc3d43bcd415c42eebe2f40nvdWEB
- github.com/ondata/ckan-mcp-server/releases/tag/v0.4.108nvdWEB
- github.com/ondata/ckan-mcp-server/security/advisories/GHSA-798p-78g2-v556nvdWEB
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