CVE-2026-49291

mcp-memory-service is a semantic memory layer for AI applications. Prior to version 10.65.3, the HTTP MCP JSON-RPC endpoint at `/mcp` requires only OAuth `read` scope for all requests, then dispatches `tools/call` directly to handlers that include mutating tools. A read-only OAuth client can call `store_memory` and `delete_memory` through MCP even though the corresponding REST endpoints require `write` scope. Version 10.65.3 patches the issue.

Score

CVSS 3.1 8.1 High

Status

Deferred - security-advisories@github.com

Published

2026-06-19

Last modified

2026-10-25

Weaknesses

CWE-862

Affected products

• Mcp-memory-service (Doobidoo)

References

• https://web.archive.org/web/20260508112116/https://github.com/doobidoo/mcp-memory-service/
• https://github.com/doobidoo/mcp-memory-service/security/advisories/GHSA-2r68-g678-7qr3
• https://pypi.org/project/mcp-memory-service/10.65.3