What is CVE-2026-31242?

CVE-2026-31242 is a critical-severity vulnerability in Mem0, classified under Missing Authentication for Critical Function. CVSS score: 9.1/10. Published 2026-05-12.

How severe is CVE-2026-31242?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Auth bypass in Mem0

CVE-2026-31242

The mem0 v1.0.0 server lacks authentication and authorization controls for its memory reset functionality accessible via the DELETE /memories endpoint. An unauthenticated attacker can send a DELETE request that triggers a reset operation…

Vulnerability class: Broken Authentication

EPSS: 0.001 (31.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.

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-2026-31242?: CVE-2026-31242 is a critical-severity vulnerability in Mem0, classified under Missing Authentication for Critical Function. CVSS score: 9.1/10. Published 2026-05-12.
How severe is CVE-2026-31242?: Critical severity. CVSS v3 base score is 9.1 out of 10.