What is CVE-2026-31245?

CVE-2026-31245 is a medium-severity vulnerability in Mem0, classified under Missing Authentication for Critical Function. CVSS score: 5.3/10. Published 2026-05-12.

How severe is CVE-2026-31245?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Auth bypass in Mem0

CVE-2026-31245

The mem0 1.0.0 server lacks authentication and authorization controls for its memory creation API endpoint (POST /memories). The endpoint allows unauthenticated users to submit arbitrary memory records without verifying their identity or p…

Vulnerability class: Broken Authentication

EPSS: 0.001 (22.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

Affected products

Mem0 — versions 1.0.0
N/a — versions n/a

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function
CWE-862 — Missing Authorization

References

cve@mitre.org (Product)
cve@mitre.org (Third Party Advisory, Mitigation)

Frequently asked questions

What is CVE-2026-31245?: CVE-2026-31245 is a medium-severity vulnerability in Mem0, classified under Missing Authentication for Critical Function. CVSS score: 5.3/10. Published 2026-05-12.
How severe is CVE-2026-31245?: Medium severity. CVSS v3 base score is 5.3 out of 10.