Auth bypass in Doobidoo Mcp-Memory-Service
CVE-2026-50027
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.
Vulnerability class: Broken Authentication
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Doobidoo Mcp-memory-service — versions < 10.67.1
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_CONFIRM)
Frequently asked questions
- What is CVE-2026-50027?
- CVE-2026-50027 is a critical-severity vulnerability in Doobidoo Mcp-Memory-Service, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2026-08-14.
- How severe is CVE-2026-50027?
- Critical severity. CVSS v3 base score is 9.8 out of 10.