{"id":"CVE-2026-61612","state":"PUBLISHED","title":"@aborruso/ckan-mcp-server has SSRF via DNS-name → internal IP — incomplete fix of CVE-2026-53509","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.","publishedAt":"2026-09-21T17:37:17.030Z","updatedAt":"2026-09-21T20:44:57.500Z","severity":{"score":5.7,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["ondata ckan-mcp-server"],"affected":[{"vendor":"ondata","product":"ckan-mcp-server","versions":[{"version":"@aborruso/ckan-mcp-server","status":"affected"}]}],"references":["https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-798p-78g2-v556","https://github.com/ondata/ckan-mcp-server/commit/bb7439b553b9f965adc3d43bcd415c42eebe2f40","https://github.com/advisories/GHSA-3xm7-qw7j-qc8v","https://github.com/advisories/GHSA-g84h-j7jj-x32p","https://github.com/ondata/ckan-mcp-server/releases/tag/v0.4.108"],"weaknesses":["CWE-918"],"ingestedAt":"2026-10-29T20:12:32.778Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/61xxx/CVE-2026-61612.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-61612","state":"PUBLISHED","datePublished":"2026-09-21T17:37:17.030Z","dateUpdated":"2026-09-21T20:44:57.500Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-07-10T17:36:04.598Z"},"containers":{"cna":{"title":"@aborruso/ckan-mcp-server has SSRF via DNS-name → internal IP — incomplete fix of CVE-2026-53509","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 — strictly more than CVE-2026-53509, which only reached loopback. Version 0.4.108 contains an updated fix."}],"affected":[{"vendor":"ondata","product":"ckan-mcp-server","versions":[{"version":"@aborruso/ckan-mcp-server","status":"affected"}]}],"references":[{"url":"https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-798p-78g2-v556","name":"https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-798p-78g2-v556","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/ondata/ckan-mcp-server/commit/bb7439b553b9f965adc3d43bcd415c42eebe2f40","name":"https://github.com/ondata/ckan-mcp-server/commit/bb7439b553b9f965adc3d43bcd415c42eebe2f40","tags":["x_refsource_MISC"]},{"url":"https://github.com/advisories/GHSA-3xm7-qw7j-qc8v","name":"https://github.com/advisories/GHSA-3xm7-qw7j-qc8v","tags":["x_refsource_MISC"]},{"url":"https://github.com/advisories/GHSA-g84h-j7jj-x32p","name":"https://github.com/advisories/GHSA-g84h-j7jj-x32p","tags":["x_refsource_MISC"]},{"url":"https://github.com/ondata/ckan-mcp-server/releases/tag/v0.4.108","name":"https://github.com/ondata/ckan-mcp-server/releases/tag/v0.4.108","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.7,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-918","lang":"en","description":"CWE-918: Server-Side Request Forgery (SSRF)","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-09-21T17:37:17.030Z"},"source":{"advisory":"GHSA-798p-78g2-v556","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-21T19:40:39.811302Z","id":"CVE-2026-61612","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-21T20:44:57.500Z"}}]}}}