CVE-2026-49291
mcp-memory-service: OAuth read-only clients can write and delete memories through MCP tools/call
- State
- Published
- Severity
- 8.1 High
- Published
- Jun 19, 2026
- Updated
- Jun 22, 2026
- Reserved
- May 28, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.1 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H | GitHub_M |
Weaknesses
- CWE-862 Missing Authorization
Affected Products
| Product | Versions |
|---|---|
mcp-memory-servicedoobidoo |
|
References
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