What is CVE-2026-8201?

CVE-2026-8201 is a medium-severity vulnerability in Mongodb, classified under Use After Free. CVSS score: 6.4/10. Published 2026-05-13.

How severe is CVE-2026-8201?

Medium severity. CVSS v3 base score is 6.4 out of 10.

Use After Free in Mongodb

CVE-2026-8201

A use-after-free vulnerability exists in MongoDB's Field-Level Encryption (FLE) query analysis component, affecting client-side uses of mongocryptd and crypt_shared. Triggering this vulnerability requires control over the structure of a cl…

Vulnerability class: Use-After-Free

EPSS: 0.000 (12.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H.

Affected products

Mongodb
Mongodb, Inc. Mongodb Server — versions 7.0, 8.0, 8.2

Weakness classification (CWE)

CWE-416 — Use After Free

References

cna@mongodb.com (issue-tracking, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2026-8201?: CVE-2026-8201 is a medium-severity vulnerability in Mongodb, classified under Use After Free. CVSS score: 6.4/10. Published 2026-05-13.
How severe is CVE-2026-8201?: Medium severity. CVSS v3 base score is 6.4 out of 10.