{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-73846", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-08-13T17:44:28.643Z", "datePublished": "2026-08-14T16:56:23.752Z", "dateUpdated": "2026-08-14T16:56:23.752Z"}, "containers": {"cna": {"title": "CKAN MCP Server: Cache-key canonicalization collision enables cache confusion / poisoning", "problemTypes": [{"descriptions": [{"cweId": "CWE-345", "lang": "en", "description": "CWE-345: Insufficient Verification of Data Authenticity", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-436", "lang": "en", "description": "CWE-436: Interpretation Conflict", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-78x9-fhhx-v2g6", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-78x9-fhhx-v2g6"}, {"name": "https://github.com/ondata/ckan-mcp-server/commit/8e1522f9bbfa1f3b21550f17887f60f133e24151", "tags": ["x_refsource_MISC"], "url": "https://github.com/ondata/ckan-mcp-server/commit/8e1522f9bbfa1f3b21550f17887f60f133e24151"}, {"name": "https://github.com/ondata/ckan-mcp-server/releases/tag/v0.4.112", "tags": ["x_refsource_MISC"], "url": "https://github.com/ondata/ckan-mcp-server/releases/tag/v0.4.112"}], "affected": [{"vendor": "ondata", "product": "ckan-mcp-server", "versions": [{"version": "< 0.4.112", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-14T16:56:23.752Z"}, "descriptions": [{"lang": "en", "value": "CKAN MCP Server is a tool for querying CKAN open data portals. Prior to 0.4.112, canonicalizeParams in src/utils/cache.ts serializes request parameters with unescaped ampersand, equals-sign, and vertical-bar delimiters, allowing different logical parameter sets used by buildCacheKey to collide and an attacker to prime a shared cache with a response for a victim's distinct query. This issue is fixed in version 0.4.112."}], "source": {"advisory": "GHSA-78x9-fhhx-v2g6", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "ckan-mcp-server", "vendor": "ondata", "versions": [{"status": "affected", "version": "< 0.4.112"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "CKAN MCP Server is a tool for querying CKAN open data portals. Prior to 0.4.112, canonicalizeParams in src/utils/cache.ts serializes request parameters with unescaped ampersand, equals-sign, and vertical-bar delimiters, allowing different logical parameter sets used by buildCacheKey to collide and an attacker to prime a shared cache with a response for a victim's distinct query. This issue is fixed in version 0.4.112."}], "id": "CVE-2026-73846", "lastModified": "2026-08-14T17:20:36.953", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 4.2, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-08-14T17:20:36.953", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/ondata/ckan-mcp-server/commit/8e1522f9bbfa1f3b21550f17887f60f133e24151"}, {"source": "security-advisories@github.com", "url": "https://github.com/ondata/ckan-mcp-server/releases/tag/v0.4.112"}, {"source": "security-advisories@github.com", "url": "https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-78x9-fhhx-v2g6"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-345"}, {"lang": "en", "value": "CWE-436"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,0.4.112)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "ckan-mcp-server", "source": "cna", "vendor": "ondata"}, "product": "ckan-mcp-server", "vendor": "ondata"}], "created": "2026-08-14T18:45:17.304595+00:00", "updated": "2026-08-14T18:45:17.494772+00:00", "vendors": ["ondata", "ondata$PRODUCT$ckan-mcp-server"]}