{"id":"CVE-2026-50027","state":"PUBLISHED","title":"mcp-memory-service: Missing Authentication on Document API Endpoints Allows Unauthenticated Memory Read/Write/Delete","description":"mcp-memory-service is a semantic memory layer for AI applications. Prior to 10.67.1, all HTTP routes under /api/documents/* in mcp-memory-service are served without any authentication dependency, even when the server is configured with an API key (MCP_API_KEY) or OAuth. An unauthenticated remote attacker can upload arbitrary content into the memory store (write), retrieve stored document content (read), and permanently delete memories belonging to authenticated users (delete) — all without supplying any credentials. The /api/memories counterpart correctly enforces authentication, making this an inconsistent and exploitable authentication boundary. This vulnerability is fixed in 10.67.1.","publishedAt":"2026-08-14T18:52:47.309Z","updatedAt":"2026-08-17T16:08:00.980Z","severity":{"score":9.8,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["doobidoo mcp-memory-service"],"affected":[{"vendor":"doobidoo","product":"mcp-memory-service","versions":[{"version":"< 10.67.1","status":"affected"}]}],"references":["https://web.archive.org/web/20260508112116/https://github.com/doobidoo/mcp-memory-service","https://github.com/advisories/GHSA-84hp-mqvj-3p8h","https://pypi.org/project/mcp-memory-service"],"weaknesses":["CWE-306"],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/50xxx/CVE-2026-50027.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-50027","state":"PUBLISHED","datePublished":"2026-08-14T18:52:47.309Z","dateUpdated":"2026-08-17T16:08:00.980Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-02T22:46:02.580Z"},"containers":{"cna":{"title":"mcp-memory-service: Missing Authentication on Document API Endpoints Allows Unauthenticated Memory Read/Write/Delete","descriptions":[{"lang":"en","value":"mcp-memory-service is a semantic memory layer for AI applications. Prior to 10.67.1, all HTTP routes under /api/documents/* in mcp-memory-service are served without any authentication dependency, even when the server is configured with an API key (MCP_API_KEY) or OAuth. An unauthenticated remote attacker can upload arbitrary content into the memory store (write), retrieve stored document content (read), and permanently delete memories belonging to authenticated users (delete) — all without supplying any credentials. The /api/memories counterpart correctly enforces authentication, making this an inconsistent and exploitable authentication boundary. This vulnerability is fixed in 10.67.1."}],"affected":[{"vendor":"doobidoo","product":"mcp-memory-service","versions":[{"version":"< 10.67.1","status":"affected"}]}],"references":[{"url":"https://web.archive.org/web/20260508112116/https://github.com/doobidoo/mcp-memory-service","name":"https://web.archive.org/web/20260508112116/https://github.com/doobidoo/mcp-memory-service","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/advisories/GHSA-84hp-mqvj-3p8h","name":"https://github.com/advisories/GHSA-84hp-mqvj-3p8h","tags":["x_refsource_MISC"]},{"url":"https://pypi.org/project/mcp-memory-service","name":"https://pypi.org/project/mcp-memory-service","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-306","lang":"en","description":"CWE-306: Missing Authentication for Critical Function","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-08-14T18:52:47.309Z"},"source":{"advisory":"GHSA-84hp-mqvj-3p8h","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-17T15:24:28.617436Z","id":"CVE-2026-50027","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-17T16:08:00.980Z"}}]}}}