CVE-2026-49291
HIGHmcp-memory-service: OAuth read-only clients can write and delete memories through MCP tools/call
Title source: cnaDescription
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.
References (3)
Core 3
Core References
X_Refsource_Misc x_refsource_misc
https://pypi.org/project/mcp-memory-service/10.65.3
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https://web.archive.org/web/20260508112116/https://github.com/doobidoo/mcp-memory-service/
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https://github.com/doobidoo/mcp-memory-service/security/advisories/GHSA-2r68-g678-7qr3
Scores
CVSS v3
8.1
EPSS
0.0026
EPSS Percentile
17.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-862
Status
published
Products (2)
doobidoo/mcp-memory-service
< 10.65.3
pypi/mcp-memory-service
0 - 10.65.3PyPI
Published
Jun 19, 2026
Tracked Since
Jun 20, 2026