Read the docs
TI-2026-44132 Aliases CVE-2026-61612GHSA-798p-78g2-v556

@aborruso/ckan-mcp-server has SSRF via DNS-name → internal IP — incomplete fix of CVE-2026-53509

Priority LOW 26CWE-918Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-918 and the CVSS impact.

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. 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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00392 33rd percentileScored 2026-11-07
Fix Fixed @aborruso/ckan-mcp-server (npm): 0.4.108

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ondatackan-mcp-server@aborruso/ckan-mcp-server—No fix listedCNA
—@aborruso/ckan-mcp-server (npm)before 0.4.1080.4.108Patch availableGHSA-798p-78g2-v556
  • ckan-mcp-server Vendorondata Affected @aborruso/ckan-mcp-server Fixed in — No fix listed CNA
  • @aborruso/ckan-mcp-server (npm) Vendor— Affected before 0.4.108 Fixed in 0.4.108 Patch available GHSA-798p-78g2-v556

Remediation

  • Fix · GHSA-798p-78g2-v556 @aborruso/ckan-mcp-server (npm) Fixed in 0.4.108 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-61612
  2. 2026-10-03 Alias added: GHSA-798p-78g2-v556

References

Advisory 3

Other 4

  • TI-2026-51869 CKAN MCP Server: Cache-key canonicalization collision enables cache confusion / poisoning CVSS 3.1MEDIUM 6.5
  • TI-2026-25502 CKAN MCP Server: SSRF via base_url allows access to internal networks CVSS 3.1MEDIUM 5.7
  • TI-2026-51867 CKAN MCP Server: Information disclosure via verbose error reflection CVSS 3.1LOW 3.7
  • TI-2026-51868 CKAN MCP Server: MQA server allowlist bypass via unanchored regex (`isValidMqaServer`) CVSS 3.1MEDIUM 5.3
  • TI-2026-38583 @aborruso/ckan-mcp-server: SSRF via base_url allows access to internal networks (Potential fix bypass of CVE-2026-33060) CVSS 3.1MEDIUM 5.7
  • TI-2026-84568 Missing origin checks in CKAN MCP Server DataStore table UI CVSS 3.1LOW 3.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences