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Vulnerability record · CVE-2026-31240 · published 12 May 2026

CVE-2026-31240: Missing authentication for critical function vulnerability

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.

7.5 CVSS 3.1 High EPSS 0.54% · top 56.9% CWE-306 · Missing authentication for critical function Deferred
7.5CVSS 3.1 base score
0.54%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References

LinkTags
https://github.com/mem0ai/mem0
https://www.notion.so/CVE-2026-31240-35d1e13931888170964ae035c04a8f18

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Source: NIST National Vulnerability Database (record CVE-2026-31240), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.