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 client's FLE-related query. This issue impacts MongoDB Server’s mongocryptd component v7.0 versions prior to 7.0.34, v8.0 versions prior to 8.0.23, v8.2 versions prior to 8.2.9 and v8.3 versions prior to 8.3.2.

Score

CVSS 3.1 8.8 High

Status

Analyzed - cna@mongodb.com

Published

2026-05-13

Last modified

2026-10-26

Weaknesses

CWE-416

Affected products

• Mongodb (Mongodb)
• Mongodb Server (Mongodb Inc.)

References

• https://jira.mongodb.org/browse/SERVER-122032