{"id":"CVE-2026-31240","aliases":["PYSEC-2026-2635"],"url":"https://o3.security/vulnerability/CVE-2026-31240","summary":"mem0 server lacks authentication and authorization controls for its memory management API endpoints","details":"The mem0 1.0.0 server lacks authentication and authorization controls for its memory management API endpoints. Critical functions such as updating memory records (PUT /memories/{memory_id}) are exposed without any verification of the requester's identity or permissions. A remote attacker can exploit this by sending unauthenticated requests to modify, overwrite, or delete arbitrary memory records, leading to unauthorized data manipulation and potential data loss.","published":"2026-05-12T18:30:41Z","modified":"2026-07-13T16:43:45.967686943Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},"epss":{"score":0.00372,"percentile":0.30373,"asOf":"2026-08-15"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"mem0ai","fixedVersion":null}],"fix":null,"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-31240"},{"type":"PACKAGE","url":"https://github.com/mem0ai/mem0"},{"type":"WEB","url":"https://www.notion.so/CVE-2026-31240-35d1e13931888170964ae035c04a8f18"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-13T16:43:45.967686943Z"}}