{"id":"EUVD-2026-58725","revision":null,"records":[{"revision":"020d939084a04ab094e6db8966ce93ec","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-73845","aliases":[],"title":"CKAN MCP Server: MQA server allowlist bypass via unanchored regex (`isValidMqaServer`)","description":"CKAN MCP Server is a tool for querying CKAN open data portals. Prior to 0.4.112, the ckan_get_mqa_quality and ckan_get_mqa_quality_details tools in src/tools/quality.ts use isValidMqaServer to validate the server_url parameter with a prefix-only regular expression for dati.gov.it, allowing suffix-host and URL-userinfo values to target an attacker-controlled host and return a spoofed response. This issue is fixed in version 0.4.112.","state":0,"publishedAt":"2026-08-14T16:45:06.714+00:00","modifiedAt":"2026-08-14T18:06:04.17+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:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":5.3,"severity":"MEDIUM"}],"references":["https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-83x6-42hr-jc76","https://github.com/ondata/ckan-mcp-server/commit/8e1522f9bbfa1f3b21550f17887f60f133e24151","https://github.com/ondata/ckan-mcp-server/releases/tag/v0.4.112"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-73845","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-73845","identifiers":["CVE-2026-73845"]},"retained":false,"historicalAffected":[]},{"revision":"fab1a9a4688548d19adbc73910e51373","observedAt":"2026-11-11T16:06:16.183+00:00","statement":{"source":"euvd","id":"EUVD-2026-58725","aliases":["CVE-2026-73845","GHSA-83x6-42hr-jc76"],"title":"CKAN MCP Server is a tool for querying CKAN open data portals. Prior to 0.4.112, the ckan_get_mqa_quality and ckan_get_mqa_quality_details tools in src/tools/quality.ts use isValidMqaServer to validate the server_url parameter with a prefix…","description":"CKAN MCP Server is a tool for querying CKAN open data portals. Prior to 0.4.112, the ckan_get_mqa_quality and ckan_get_mqa_quality_details tools in src/tools/quality.ts use isValidMqaServer to validate the server_url parameter with a prefix-only regular expression for dati.gov.it, allowing suffix-host and URL-userinfo values to target an attacker-controlled host and return a spoofed response. This issue is fixed in version 0.4.112.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":5.3,"severity":null}],"references":["https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-83x6-42hr-jc76","https://github.com/ondata/ckan-mcp-server/commit/8e1522f9bbfa1f3b21550f17887f60f133e24151","https://github.com/ondata/ckan-mcp-server/releases/tag/v0.4.112"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-58725","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Aug 14, 2026, 4:45:06 PM","dateUpdated":"Aug 14, 2026, 6:06:04 PM"},"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-2026-58725","identifiers":["EUVD-2026-58725","CVE-2026-73845","GHSA-83x6-42hr-jc76"]},"retained":false,"historicalAffected":[]},{"revision":"9ec572ccd1f44ec594049bc38d1e2d52","observedAt":"2026-10-25T15:19:09.409+00:00","statement":{"source":"nvd","id":"CVE-2026-73845","aliases":[],"title":"CKAN MCP Server is a tool for querying CKAN open data portals. Prior to 0.4.112, the ckan_get_mqa_quality and ckan_get_mqa_quality_details tools in src/tools/quality.ts use isValidMqaServer to validate the server_url parameter with a prefix…","description":"CKAN MCP Server is a tool for querying CKAN open data portals. Prior to 0.4.112, the ckan_get_mqa_quality and ckan_get_mqa_quality_details tools in src/tools/quality.ts use isValidMqaServer to validate the server_url parameter with a prefix-only regular expression for dati.gov.it, allowing suffix-host and URL-userinfo values to target an attacker-controlled host and return a spoofed response. This issue is fixed in version 0.4.112.","state":0,"publishedAt":"2026-08-14T17:20:36.82+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:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":5.3,"severity":"MEDIUM"}],"references":["https://github.com/ondata/ckan-mcp-server/commit/8e1522f9bbfa1f3b21550f17887f60f133e24151","https://github.com/ondata/ckan-mcp-server/releases/tag/v0.4.112","https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-83x6-42hr-jc76"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-73845","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-20","CWE-625","CWE-918"],"productCriteria":[],"sourceDates":{"published":"2026-08-14T17:20:36.820","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-2026-73845","identifiers":["CVE-2026-73845"]},"retained":false,"historicalAffected":[]},{"revision":"b320d5389b1f4e258738d2d1129af006","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-83x6-42hr-jc76","aliases":["CVE-2026-73845"],"title":"CKAN MCP Server: MQA server allowlist bypass via unanchored regex (`isValidMqaServer`)","description":"## Summary\n\nThe `ckan_get_mqa_quality` and `ckan_get_mqa_quality_details` tools restrict their `server_url` argument to `dati.gov.it` via a regular expression. The regex is anchored only at the start and places no boundary after the host, so any URL whose host merely **begins with** `dati.gov.it` — or that uses `dati.gov.it` as URL *userinfo* before an `@` — passes validation while actually targeting an attacker-controlled host.\n\n## Affected code\n\n```js\n// src/tools/quality.ts\nconst ALLOWED_SERVER_PATTERNS = [\n  /^https?:\\/\\/(www\\.)?dati\\.gov\\.it/i        // <-- no end anchor / host boundary\n];\nexport function isValidMqaServer(serverUrl: string): boolean {\n  return ALLOWED_SERVER_PATTERNS.some(pattern => pattern.test(serverUrl));\n}\n```\n\nAll of the following return `true`:\n\n| URL | Real host |\n|-----|-----------|\n| `https://dati.gov.it.attacker.com/x` | `dati.gov.it.attacker.com` (attacker) |\n| `http://dati.gov.it.evil.example/api` | `dati.gov.it.evil.example` (attacker) |\n| `https://dati.gov.it@attacker.com/x` | `attacker.com` (userinfo trick) |\n\nAfter passing this check, `server_url` flows into `getMqaQuality`/`getMqaQualityDetails`, which call `makeCkanRequest(serverUrl, \"package_show\", { id })`. The server therefore issues a request to the attacker-controlled host and returns its (parsed) response to the caller.\n\n## Impact\n\n- The intended \"dati.gov.it only\" trust boundary for the MQA tools is defeated; they can be driven against arbitrary external hosts.\n- The attacker host receives the request (including the `dataset_id`) and controls the response body that is surfaced back to the model/user — enabling response spoofing and, in an agentic setting, indirect prompt-injection content delivered under the guise of a trusted-portal tool.\n- Contributes to SSRF surface: while `makeCkanRequest` blocks private/internal IPs, this bypass removes the domain restriction that the code intends to enforce for these tools.\n\nThe `@`-userinfo variant is the most severe form because validation passes on a string whose *actual* host is fully attacker-chosen.\n\n## Proof of concept\n\n`poc/mqa-allowlist-poc.mjs` runs the verbatim regex over benign and malicious URLs:\n\n```\naccepted  expected_legit  url\ntrue      true            https://dati.gov.it/opendata          <- legit\ntrue      false           https://dati.gov.it.attacker.com/x    <- BYPASS\ntrue      false           http://dati.gov.it.evil.example/api   <- BYPASS\ntrue      false           https://dati.gov.it@attacker.com/x    <- BYPASS\n```\n\n## Remediation\n\nValidate the parsed host, not the raw string. For example:\n\n```js\nfunction isValidMqaServer(serverUrl) {\n  let u; try { u = new URL(serverUrl); } catch { return false; }\n  if (u.protocol !== \"https:\") return false;\n  const h = u.hostname.toLowerCase();\n  return h === \"dati.gov.it\" || h === \"www.dati.gov.it\";\n  // or: h === \"dati.gov.it\" || h.endsWith(\".dati.gov.it\")\n}\n```\n\nAnchoring the regex end-to-end (`/^https:\\/\\/(www\\.)?dati\\.gov\\.it(\\/|$)/i`) also closes the suffix trick, but URL-parsing + exact host comparison is the robust fix and also neutralizes the `@`-userinfo variant.","state":0,"publishedAt":"2026-09-02T14:52:21+00:00","modifiedAt":"2026-09-02T15:00:10.8290586+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:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-83x6-42hr-jc76","https://nvd.nist.gov/vuln/detail/CVE-2026-73845","https://github.com/ondata/ckan-mcp-server/commit/8e1522f9bbfa1f3b21550f17887f60f133e24151","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-83x6-42hr-jc76","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-83x6-42hr-jc76","identifiers":["GHSA-83x6-42hr-jc76","CVE-2026-73845"]},"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. No reader inventory is sent.","generation":"enrichment-99b329e58ea7441eaabf9a9af1bb4458","complete":true,"records":13781,"lastAttemptAt":"2026-11-13T03:19:48.7349646+00:00","lastSuccessAt":"2026-11-13T03:19:48.73+00:00","error":null,"lastVerifiedAt":"2026-11-13T03:19:48.73+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13846,"expectedIdentifiers":13846,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-93e76d404e1aeb6a7e8902f5ffa06211fc86dea3b1958e297abb2668aa5e6e8c","complete":true,"records":9952,"lastAttemptAt":"2026-11-13T03:19:40.4671686+00:00","lastSuccessAt":"2026-11-12T23:19:15.5239119+00:00","error":null,"lastVerifiedAt":"2026-11-13T03:19:40.4671686+00:00","snapshotPublishedAt":"2026-11-12T23:03:02+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-4d60731753a2f72e455d1086e7203d0ef10843936dcc1cf2b45135e2caa204b0","complete":true,"records":2012,"lastAttemptAt":"2026-11-13T03:16:36.9337406+00:00","lastSuccessAt":"2026-11-12T18:16:50.7862525+00:00","error":null,"lastVerifiedAt":"2026-11-13T03:16:36.9337406+00:00","snapshotPublishedAt":"2026-11-12T17:48:11+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-20d1a8ab073a1c13ab2143dbcadb34ebb8edf1e18e16482b448513662c3d1e12","complete":true,"records":3127,"lastAttemptAt":"2026-11-13T03:19:40.4889465+00:00","lastSuccessAt":"2026-11-12T22:18:31.0338213+00:00","error":null,"lastVerifiedAt":"2026-11-13T03:19:40.4889465+00:00","snapshotPublishedAt":"2026-11-12T22:18:06+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-11714c374501e9f6ac09cc4e36bc0b50c7521131f606050aeabd7887ba2c0080","complete":true,"records":231743,"lastAttemptAt":"2026-11-13T03:19:40.3437235+00:00","lastSuccessAt":"2026-11-13T03:19:38.55958+00:00","error":null,"lastVerifiedAt":"2026-11-13T03:19:40.3437235+00:00","snapshotPublishedAt":"2026-11-13T02:48:17+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}