Is CVE-2026-49291 actively exploited?

No active exploitation of CVE-2026-49291 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-49291 be exploited remotely?

Yes. CVE-2026-49291 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-49291?

CVE-2026-49291 has a CVSS score of 8.1 (HIGH).

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HIGH

CVE-2026-49291

CWE-862Published: June 19, 2026· Updated: Jun 23, 2026

8.1

CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2026-49291 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.1.