{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "10.65.3"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0a04f0be15eece8d460183432dbd7a55386fa140"
            }
          ],
          "repo": "https://github.com/doobidoo/mcp-memory-service",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-2r68-g678-7qr3"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-862"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49291.json"
  },
  "details": "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.",
  "id": "CVE-2026-49291",
  "modified": "2026-08-28T11:31:00.361675623Z",
  "published": "2026-06-19T17:59:48.862Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://web.archive.org/web/20260508112116/https://github.com/doobidoo/mcp-memory-service/"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49291.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/doobidoo/mcp-memory-service/security/advisories/GHSA-2r68-g678-7qr3"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-49291"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/mcp-memory-service/10.65.3"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "mcp-memory-service: OAuth read-only clients can write and delete memories through MCP tools/call"
}