{"id":"EUVD-2026-58724","revision":null,"records":[{"revision":"4546e7e58c9d474a944b42046b5e21ce","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-73844","aliases":[],"title":"CKAN MCP Server: Information disclosure via verbose error reflection","description":"CKAN MCP Server is a tool for querying CKAN open data portals. Prior to 0.4.112, error paths reflect raw upstream response bodies and internal exception messages back to the caller instead of a sanitized, generic message. When the server is pointed at (or redirected/SSRF'd to) a host that returns a non-CKAN response, or when an internal exception occurs, the caller receives verbatim upstream content and internal detail (hostnames, internal IPs, DB errors, stack fragments). This vulnerability is fixed in 0.4.112.","state":0,"publishedAt":"2026-08-14T16:41:42.975+00:00","modifiedAt":"2026-08-18T02:11:05.582+00:00","affected":[{"ecosystem":"Vendor product","name":"ckan-mcp-server","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"ondata\",\n                    \"product\": \"ckan-mcp-server\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 0.4.112\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","score":3.7,"severity":"LOW"}],"references":["https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-6f9w-9hf2-5rg3","https://github.com/ondata/ckan-mcp-server/commit/3b827af72b228d42aa7b0d7dac5347d16af3f4e5","https://github.com/ondata/ckan-mcp-server/releases/tag/v0.4.112"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-73844","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-73844","identifiers":["CVE-2026-73844"]},"retained":false,"historicalAffected":[]},{"revision":"666c7f6e1a9a4d8681b5dc52b038af3f","observedAt":"2026-11-11T16:06:15.01+00:00","statement":{"source":"euvd","id":"EUVD-2026-58724","aliases":["CVE-2026-73844","GHSA-6f9w-9hf2-5rg3"],"title":"CKAN MCP Server is a tool for querying CKAN open data portals. Prior to 0.4.112, error paths reflect raw upstream response bodies and internal exception messages back to the caller instead of a sanitized, generic message. When the server is…","description":"CKAN MCP Server is a tool for querying CKAN open data portals. Prior to 0.4.112, error paths reflect raw upstream response bodies and internal exception messages back to the caller instead of a sanitized, generic message. When the server is pointed at (or redirected/SSRF'd to) a host that returns a non-CKAN response, or when an internal exception occurs, the caller receives verbatim upstream content and internal detail (hostnames, internal IPs, DB errors, stack fragments). This vulnerability is fixed in 0.4.112.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","score":3.7,"severity":null}],"references":["https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-6f9w-9hf2-5rg3","https://github.com/ondata/ckan-mcp-server/commit/3b827af72b228d42aa7b0d7dac5347d16af3f4e5","https://github.com/ondata/ckan-mcp-server/releases/tag/v0.4.112"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-58724","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Aug 14, 2026, 4:41:42 PM","dateUpdated":"Aug 18, 2026, 2:11:05 AM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-58724","identifiers":["EUVD-2026-58724","CVE-2026-73844","GHSA-6f9w-9hf2-5rg3"]},"retained":false,"historicalAffected":[]},{"revision":"ec3cb5ce823048c79b038a4fc31225a1","observedAt":"2026-10-25T15:19:09.409+00:00","statement":{"source":"nvd","id":"CVE-2026-73844","aliases":[],"title":"CKAN MCP Server is a tool for querying CKAN open data portals. Prior to 0.4.112, error paths reflect raw upstream response bodies and internal exception messages back to the caller instead of a sanitized, generic message. When the server is…","description":"CKAN MCP Server is a tool for querying CKAN open data portals. Prior to 0.4.112, error paths reflect raw upstream response bodies and internal exception messages back to the caller instead of a sanitized, generic message. When the server is pointed at (or redirected/SSRF'd to) a host that returns a non-CKAN response, or when an internal exception occurs, the caller receives verbatim upstream content and internal detail (hostnames, internal IPs, DB errors, stack fragments). This vulnerability is fixed in 0.4.112.","state":0,"publishedAt":"2026-08-14T17:20:36.683+00:00","modifiedAt":"2026-09-18T20:09:01.757+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","score":3.7,"severity":"LOW"}],"references":["https://github.com/ondata/ckan-mcp-server/commit/3b827af72b228d42aa7b0d7dac5347d16af3f4e5","https://github.com/ondata/ckan-mcp-server/releases/tag/v0.4.112","https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-6f9w-9hf2-5rg3"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-73844","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-209","CWE-210"],"productCriteria":[],"sourceDates":{"published":"2026-08-14T17:20:36.683","lastModified":"2026-09-18T20:09:01.757"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-73844","identifiers":["CVE-2026-73844"]},"retained":false,"historicalAffected":[]},{"revision":"66b438fae4c345bf85ea068a40ecfda0","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-6f9w-9hf2-5rg3","aliases":["CVE-2026-73844"],"title":"CKAN MCP Server: Information disclosure via verbose error reflection","description":"## Summary\n\nError paths reflect raw upstream response bodies and internal exception messages back to the caller instead of a sanitized, generic message. When the server is pointed at (or redirected/SSRF'd to) a host that returns a non-CKAN response, or when an internal exception occurs, the caller receives verbatim upstream content and internal detail (hostnames, internal IPs, DB errors, stack fragments).\n\n## Affected code\n\n`src/utils/http.ts` — the entire decoded upstream body is embedded in the thrown error, which `formatCkanError` returns to the tool result:\n\n```js\n} else {\n  throw new CkanApiError(\n    `CKAN API returned success=false: ${JSON.stringify(decodedData)}`,   // full body reflected\n    undefined,\n    action\n  );\n}\n```\n\n`src/worker.ts` — the catch-all handler returns the raw `Error.message` in the JSON-RPC `data` field:\n\n```js\nreturn new Response(JSON.stringify({\n  jsonrpc: '2.0',\n  error: { code: -32603, message: 'Internal error',\n           data: error instanceof Error ? error.message : String(error) },  // raw internal message\n  id: null\n}), { status: 500, ... });\n```\n\n## Impact\n\n- Reflects arbitrary upstream response content to the caller. Combined with the SSRF vectors (advisories #01/#06), an attacker can use this as the *read* channel: point the server at an internal endpoint and receive its body inside the `success=false` error string (turning otherwise-blind SSRF into a semi-blind/return-value SSRF for any host that reaches the guards).\n- Leaks internal operational detail via exception messages: node error codes and target addresses (e.g. `ECONNREFUSED 169.254.169.254:80`), which confirm internal reachability and infrastructure, and any stack/path fragments an upstream includes.\n- Aids reconnaissance and error-oracle attacks against the deployment.\n\nSeverity is Low on its own (the server holds no credentials of its own and sends no auth upstream), but it meaningfully amplifies the SSRF findings by providing a response-content channel.\n\n## Proof of concept\n\n`poc/error-disclosure-poc.mjs` reproduces both paths and shows an upstream body\n(containing a simulated DB error with an internal IP) and an internal\n`ECONNREFUSED 169.254.169.254` message being reflected to the caller.\n\n## Remediation\n\n- Return generic, action-scoped error messages to the caller; log the detailed\n  upstream body/exception server-side only.\n- Do not embed `JSON.stringify(decodedData)` in caller-visible errors; cap and\n  redact any reflected content.\n- In the Workers catch-all, omit `error.message` from the response `data` (or\n  replace with a correlation id) in production.","state":0,"publishedAt":"2026-09-03T14:49:10+00:00","modifiedAt":"2026-09-03T15:00:09.6142139+00:00","affected":[{"ecosystem":"npm","name":"@aborruso/ckan-mcp-server","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"0.4.112"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"LOW"}],"references":["https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-6f9w-9hf2-5rg3","https://nvd.nist.gov/vuln/detail/CVE-2026-73844","https://github.com/ondata/ckan-mcp-server/commit/3b827af72b228d42aa7b0d7dac5347d16af3f4e5","https://github.com/ondata/ckan-mcp-server","https://github.com/ondata/ckan-mcp-server/releases/tag/v0.4.112"],"sourceUrl":"https://github.com/advisories/GHSA-6f9w-9hf2-5rg3","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-6f9w-9hf2-5rg3","identifiers":["GHSA-6f9w-9hf2-5rg3","CVE-2026-73844"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-13T03:19:40.5269590+00:00","complete":true,"records":1779,"lastAttemptAt":"2026-11-13T03:19:40.526959+00:00","lastSuccessAt":"2026-11-13T03:19:40.6882289+00:00","error":null,"lastVerifiedAt":"2026-11-13T03:19:40.688234+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-d8fa82e95fdb59244e2f635e667ba17f0796ca0a4f1f4bb8cc31febcd660b76c-98121ba726768336a864ab5bced2f3860f36459d7555a27229b152c25d7e1f39","complete":true,"records":424942,"lastAttemptAt":"2026-11-13T03:16:36.8593016+00:00","lastSuccessAt":"2026-11-13T03:16:36.8357038+00:00","error":null,"lastVerifiedAt":"2026-11-13T03:16:36.8593016+00:00","snapshotPublishedAt":"2026-11-13T02:30:23+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-7f404f09616a40578b159775b5b66635","complete":false,"records":13793,"lastAttemptAt":"2026-11-13T03:29:27.9813623+00:00","lastSuccessAt":"2026-11-13T03:29:27.977+00:00","error":"370 identifier lookups failed; latest failures include AccessDenied (HTTP 403). Other identifiers were checked independently.","lastVerifiedAt":"2026-11-13T03:29:27.977+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13369,"expectedIdentifiers":13846,"failedIdentifiers":370},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-13T03:19:40.5269590+00:00","complete":true,"records":1123,"lastAttemptAt":"2026-11-13T03:19:40.526959+00:00","lastSuccessAt":"2026-11-13T03:19:40.6892892+00:00","error":null,"lastVerifiedAt":"2026-11-13T03:19:40.6892894+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. 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