{"cve":"CVE-2026-73846","nvd":{"published":"2026-08-14T17:20:36.953","modified":"2026-09-18T20:09:01.757","status":"Deferred","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N","score":6.5},"cwes":["CWE-345","CWE-436"],"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-78x9-fhhx-v2g6","https://github.com/ondata/ckan-mcp-server/security/advisories/GHSA-78x9-fhhx-v2g6"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:48:17.459049833+00:00"},"epss":{"cve":"CVE-2026-73846","score":0.00194,"percentile":0.09176,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-78x9-fhhx-v2g6","url":"https://osv.dev/vulnerability/GHSA-78x9-fhhx-v2g6","summary":"CKAN MCP Server: Cache-key canonicalization collision enables cache confusion / poisoning","modified":"2026-09-03T15:00:09.620554195Z","packages":[{"ecosystem":"npm","name":"@aborruso/ckan-mcp-server","purl":"pkg:npm/%40aborruso/ckan-mcp-server","ranges":["<0.4.112"],"fixed":["0.4.112"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}