{"id":"CVE-2026-73845","state":"PUBLISHED","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.","publishedAt":"2026-08-14T16:45:06.714Z","updatedAt":"2026-08-14T18:06:04.170Z","severity":{"score":5.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["ondata ckan-mcp-server"],"affected":[{"vendor":"ondata","product":"ckan-mcp-server","versions":[{"version":"< 0.4.112","status":"affected"}]}],"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"],"weaknesses":["CWE-20","CWE-625","CWE-918"],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/73xxx/CVE-2026-73845.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-73845","state":"PUBLISHED","datePublished":"2026-08-14T16:45:06.714Z","dateUpdated":"2026-08-14T18:06:04.170Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-08-13T17:44:28.643Z"},"containers":{"cna":{"title":"CKAN MCP Server: MQA server allowlist bypass via unanchored regex (`isValidMqaServer`)","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"ondata","product":"ckan-mcp-server","versions":[{"version":"< 0.4.112","status":"affected"}]}],"references":[{"url":"https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-83x6-42hr-jc76","name":"https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-83x6-42hr-jc76","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/ondata/ckan-mcp-server/commit/8e1522f9bbfa1f3b21550f17887f60f133e24151","name":"https://github.com/ondata/ckan-mcp-server/commit/8e1522f9bbfa1f3b21550f17887f60f133e24151","tags":["x_refsource_MISC"]},{"url":"https://github.com/ondata/ckan-mcp-server/releases/tag/v0.4.112","name":"https://github.com/ondata/ckan-mcp-server/releases/tag/v0.4.112","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-20","lang":"en","description":"CWE-20: Improper Input Validation","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-625","lang":"en","description":"CWE-625: Permissive Regular Expression","type":"CWE"}]},{"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":"2026-08-14T16:45:06.714Z"},"source":{"advisory":"GHSA-83x6-42hr-jc76","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-14T17:41:38.966873Z","id":"CVE-2026-73845","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-14T18:06:04.170Z"}}]}}}