CVE-2026-61612

{"id": "CVE-2026-61612", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-61612", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-21T19:40:39.811302Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.7, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 2.1}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "ondata", "product": "ckan-mcp-server", "versions": [{"status": "affected", "version": "@aborruso/ckan-mcp-server"}]}]}], "published": "2026-09-21T18:17:09.073", "references": [{"url": "https://github.com/advisories/GHSA-3xm7-qw7j-qc8v", "source": "security-advisories@github.com"}, {"url": "https://github.com/advisories/GHSA-g84h-j7jj-x32p", "source": "security-advisories@github.com"}, {"url": "https://github.com/ondata/ckan-mcp-server/commit/bb7439b553b9f965adc3d43bcd415c42eebe2f40", "source": "security-advisories@github.com"}, {"url": "https://github.com/ondata/ckan-mcp-server/releases/tag/v0.4.108", "source": "security-advisories@github.com"}, {"url": "https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-798p-78g2-v556", "source": "security-advisories@github.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-918"}]}], "descriptions": [{"lang": "en", "value": "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 \u2014 strictly more than CVE-2026-53509, which only reached loopback. Version 0.4.108 contains an updated fix."}], "lastModified": "2026-09-24T21:25:27.050", "sourceIdentifier": "security-advisories@github.com"}