CVE-2026-50027

critical · 9.8

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.

9.8

CVSS

1.0%

EPSS (exploit prob.)

60th

EPSS percentile

2026-08-14

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

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

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-50027