CVE-2026-49291 | mcp-memory-service is a semantic memory layer for AI applica… | CVSS 8.1 HIGH

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.

Metadata

CVE ID: CVE-2026-49291
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-05-28 20:07 UTC
Published: 2026-06-19 17:59 UTC
Last updated: 2026-06-19 17:59 UTC
Primary CWE: CWE-862
CWE-862: Missing Authorization
Vendor / Product: doobidoo / mcp-memory-service
Sources: cve.org · NVD

Severity & Metrics

8.1 HIGH CVSS 3.1

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

Affected products (1)

Vendor	Product	Platform	Versions
doobidoo	mcp-memory-service	—	< 10.65.3

Weakness (CWE)

CWE	Source	Description
CWE-862	cna	CWE-862: Missing Authorization

CVSS scores (1)

Score	Severity	Version	Source	Vector
8.1	HIGH	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

References (3)

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