CVSS 3.1
5.7 mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:NCVE-2026-61612
Medium (5.7). EPSS 0.4% chance of exploitation in the next 30 days. Fixed in @aborruso/ckan-mcp-server 0.4.108.
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.
Severity
- EPSS
- 0.4% chance of exploitation in the next 30 days; higher than 33% of CVEs (scores of 2026-10-31)
- CWE
- CWE-918
- Published
- Modified
- Record from
- the NVD, synced
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-798p-78g2-v556 | npm | @aborruso/ckan-mcp-server | <0.4.108 | 0.4.108 |
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