CVE-2026-61612
Published:September 21, 2026
Updated:October 20, 2026
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.
Affected Packages
https://github.com/ondata/ckan-mcp-server.git (GITHUB):
Affected version(s) >=v0.4.0 <v0.4.108Fix Suggestion:
Update to version v0.4.108@aborruso/ckan-mcp-server (NPM):
Affected version(s) >=0.3.1 <0.4.108Fix Suggestion:
Update to version 0.4.108Additional Notes
The description of this vulnerability differs from MITRE.
Related Resources (8)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
PASSIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.7
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Server-Side Request Forgery (SSRF)
EPSS
Base Score:
0.23