mcp-memory-service: OAuth read-only clients can write and delete memories through MCP tools/call_CVE-2026-49291

{
    "lastseen": "",
    "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.",
    "published": "2026-06-19T17:59:48.862Z",
    "modified": "2026-06-19T17:59:48.862Z",
    "type": "cve",
    "title": "mcp-memory-service: OAuth read-only clients can write and delete memories through MCP tools/call",
    "source": "GitHub_M",
    "references": "https://web.archive.org/web/20260508112116/https://github.com/doobidoo/mcp-memory-service/\nhttps://github.com/doobidoo/mcp-memory-service/security/advisories/GHSA-2r68-g678-7qr3\nhttps://pypi.org/project/mcp-memory-service/10.65.3",
    "id": "CVE-2026-49291",
    "bulletinFamily": "",
    "cwe": [
        "CWE-862"
    ],
    "cvelist": null,
    "sourceData": "doobidoo mcp-memory-service < 10.65.3",
    "sourceHref": "",
    "cvss": {
        "score": 8.1,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "mcp-memory-service",
    "version": "< 10.65.3",
    "vendor": "doobidoo",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}