CVE-2026-61612
5.7 MEDIUMpublic exploit availablePublished 2026-09-21 · Updated 2026-09-21
AI risk analysis
- Summary
- The flaw allows SSRF attacks by not fully validating server URLs, enabling requests to internal addresses like loopback and cloud metadata.
- Exploitability
- Exploitation requires control over the `server_url` parameter and network access to internal addresses; moderate difficulty due to DNS resolution bypass.
- Blast radius
- If exploited, could lead to unauthorized data access or manipulation of internal services through IMDS.
- Prioritized remediation
- Update to CKAN MCP Server version 0.4.108 or later to apply the updated fix.
Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.
NVD 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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
Weaknesses
CWE-918
Public exploit & PoC references
- https://github.com/advisories/GHSA-3xm7-qw7j-qc8v
- https://github.com/advisories/GHSA-g84h-j7jj-x32p
- https://github.com/ondata/ckan-mcp-server/commit/bb7439b553b9f965adc3d43bcd415c42eebe2f40
- https://github.com/ondata/ckan-mcp-server/releases/tag/v0.4.108
- https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-798p-78g2-v556
All references
- https://github.com/advisories/GHSA-3xm7-qw7j-qc8v
- https://github.com/advisories/GHSA-g84h-j7jj-x32p
- https://github.com/ondata/ckan-mcp-server/commit/bb7439b553b9f965adc3d43bcd415c42eebe2f40
- https://github.com/ondata/ckan-mcp-server/releases/tag/v0.4.108
- https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-798p-78g2-v556
Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.
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