{"cve":"CVE-2026-50027","nvd":{"published":"2026-08-14T19:17:18.843","modified":"2026-09-16T13:42:43.447","status":"Deferred","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-306"],"references":["https://github.com/advisories/GHSA-84hp-mqvj-3p8h","https://pypi.org/project/mcp-memory-service","https://web.archive.org/web/20260508112116/https://github.com/doobidoo/mcp-memory-service"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:48:17.459049833+00:00"},"epss":{"cve":"CVE-2026-50027","score":0.00959,"percentile":0.61505,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-84hp-mqvj-3p8h","url":"https://osv.dev/vulnerability/GHSA-84hp-mqvj-3p8h","summary":"mcp-memory-service: Missing Authentication on Document API Endpoints Allows Unauthenticated Memory Read/Write/Delete","modified":"2026-07-13T16:43:53.370282269Z","packages":[{"ecosystem":"PyPI","name":"mcp-memory-service","purl":"pkg:pypi/mcp-memory-service","ranges":["<10.67.1"],"fixed":["10.67.1"]}]},{"id":"PYSEC-2026-2624","url":"https://osv.dev/vulnerability/PYSEC-2026-2624","summary":"mcp-memory-service: Missing Authentication on Document API Endpoints Allows Unauthenticated Memory Read/Write/Delete","modified":"2026-07-13T16:32:13.296450909Z","packages":[{"ecosystem":"PyPI","name":"mcp-memory-service","purl":"pkg:pypi/mcp-memory-service","ranges":["<10.67.1"],"fixed":["10.67.1"]}]}],"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."]}