{"cve":"CVE-2026-49291","nvd":{"published":"2026-06-19T19:16:36.170","modified":"2026-10-25T23:10:00.167","status":"Deferred","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","score":8.1},"cwes":["CWE-862"],"references":["https://github.com/doobidoo/mcp-memory-service/security/advisories/GHSA-2r68-g678-7qr3","https://pypi.org/project/mcp-memory-service/10.65.3","https://web.archive.org/web/20260508112116/https://github.com/doobidoo/mcp-memory-service/"],"products":[],"source":"nvd","synced_at":"2026-10-25T23:44:33.281319194+00:00"},"epss":{"cve":"CVE-2026-49291","score":0.00488,"percentile":0.41714,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-2r68-g678-7qr3","url":"https://osv.dev/vulnerability/GHSA-2r68-g678-7qr3","summary":"mcp-memory-service: OAuth read-only clients can write and delete memories through MCP tools/call","modified":"2026-07-13T16:42:40.292723189Z","packages":[{"ecosystem":"PyPI","name":"mcp-memory-service","purl":"pkg:pypi/mcp-memory-service","ranges":["<10.65.3"],"fixed":["10.65.3"]}]},{"id":"PYSEC-2026-2622","url":"https://osv.dev/vulnerability/PYSEC-2026-2622","summary":"mcp-memory-service: OAuth read-only clients can write and delete memories through MCP tools/call","modified":"2026-07-13T16:32:13.084434734Z","packages":[{"ecosystem":"PyPI","name":"mcp-memory-service","purl":"pkg:pypi/mcp-memory-service","ranges":["<10.65.3"],"fixed":["10.65.3"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}