What is CVE-2026-31241?

CVE-2026-31241 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-2026-31241?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Auth bypass in Mem0

CVE-2026-31241

The mem0 1.0.0 server lacks authentication and authorization controls for its memory deletion API endpoint (DELETE /memories). The endpoint allows unauthenticated users to delete memory records by specifying arbitrary user identifiers (e.g…

Vulnerability class: Broken Authentication

EPSS: 0.002 (35.5th percentile) — read the EPSS interpretation.

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.

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-2026-31241?: CVE-2026-31241 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-2026-31241?: Medium severity. CVSS v3 base score is 6.5 out of 10.