CVE-2026-8201 — Use-After-Free in MongoDB FLE Query Analysis When Processing Positional Projections on Encrypted Fields

CVE-2026-8201

Use-After-Free in MongoDB FLE Query Analysis When Processing Positional Projections on Encrypted Fields PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
MongoDB, Inc. / MongoDB Server	affected 7.0 before 7.0.34; affected 8.0 before 8.0.23; affected 8.2 before 8.2.9; affected 8.3 before 8.3.2

CWE

CWE-416

References

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

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.