CVEvulnerability

CVE-2026-61612

5.7 MEDIUM Published 2026-09-21 Modified 2026-09-24 Official page ↗
Status
Deferred
Published
2026-09-21
Last modified
2026-09-24
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.7 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
Weaknesses
CWE-918

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.

Related

Weakness · CWE (1)

  • CWE-918 Server-Side Request Forgery weakness

References