CVE-2026-61612
@aborruso/ckan-mcp-server has SSRF via DNS-name → internal IP — incomplete fix of CVE-2026-53509
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Medium5.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N |
| NVDNVD · Deferred | 3.1 | Medium5.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 0.39% · top 66% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.7.
Weakness
Affected products
- affected @aborruso/ckan-mcp-server
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- npm@aborruso/ckan-mcp-serverGHSA-798p-78g2-v556 (opens in a new tab)
References (5)
- https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-798p-78g2-v556 (opens in a new tab)x_refsource_CONFIRM
- https://github.com/ondata/ckan-mcp-server/commit/bb7439b553b9f965adc3d43bcd415c42eebe2f40 (opens in a new tab)x_refsource_MISC
- https://github.com/advisories/GHSA-3xm7-qw7j-qc8v (opens in a new tab)x_refsource_MISC
- https://github.com/advisories/GHSA-g84h-j7jj-x32p (opens in a new tab)x_refsource_MISC
- https://github.com/ondata/ckan-mcp-server/releases/tag/v0.4.108 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-798p-78g2-v556 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-61612)Record last updated .