{"id":"EUVD-2026-42720","revision":"39633f604c1e426c8684e7c28fa36b43","records":[{"revision":"39633f604c1e426c8684e7c28fa36b43","observedAt":"2026-11-01T10:12:03.118+00:00","statement":{"source":"euvd","id":"EUVD-2026-42720","aliases":["CVE-2026-55604","GHSA-fh3r-g96v-f578"],"title":"DeepSeek MCP Server is an MCP server for DeepSeek V4. Starting in version 1.4.2 and prior to version 1.7.0, the process-global `SessionStore` accepts caller-supplied `session_id` values without binding them to any authenticated principal or…","description":"DeepSeek MCP Server is an MCP server for DeepSeek V4. Starting in version 1.4.2 and prior to version 1.7.0, the process-global `SessionStore` accepts caller-supplied `session_id` values without binding them to any authenticated principal or transport session. An attacker can enumerate active session IDs via `deepseek_sessions`, then reuse a victim-controlled `session_id` in `deepseek_chat` to retrieve and continue the victim's conversation context. Version 1.7.0 contains a patch.","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:H/I:L/A:L","score":8.6,"severity":null}],"references":["https://github.com/arikusi/deepseek-mcp-server/security/advisories/GHSA-fh3r-g96v-f578","https://github.com/arikusi/deepseek-mcp-server/releases/tag/v1.7.0"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-42720","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Jul 9, 2026, 9:13:15 PM","dateUpdated":"Jul 10, 2026, 2:42:09 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-2026-42720","identifiers":["EUVD-2026-42720","CVE-2026-55604","GHSA-fh3r-g96v-f578"]},"retained":false,"historicalAffected":[]}],"coverage":[]}