Auth bypass in Mem0

CVE-2026-31243

The mem0 1.0.0 server lacks authentication and authorization controls for its memory reset and table re-creation functionality accessible via the DELETE /memories endpoint. An unauthenticated attacker can send a DELETE request that triggers a reset operation, leading to the execution of a CREATE TABLE SQL statement. This can cause unexpected table re-creation, schema disruption, potential data loss, and denial of service for the memory management service.

Vulnerability class: Broken Authentication

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L.

EPSS exploit prediction

EPSS: 0.005 (42.9th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 42.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-31243: held from 0.004 to 0.005.

EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.002

Affected products

  • Mem0 — versions 1.0.0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-31243?
CVE-2026-31243 is a medium-severity vulnerability in Mem0, classified under Missing Authentication for Critical Function. CVSS score: 6.5/10. Published 2026-05-12.
How severe is CVE-2026-31243?
Medium severity. CVSS v3 base score is 6.5 out of 10.