CVE-2026-8201

EUVD-2026-29892
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6.4 MEDIUM
NETWORK
HIGH
LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 2%
Affected Products (NVD)
VendorProductVersion
mongodbmongodb
7.0.0 ≤
𝑥
< 7.0.34
mongodbmongodb
8.0.0 ≤
𝑥
< 8.0.23
mongodbmongodb
8.2.0 ≤
𝑥
< 8.2.9
mongodbmongodb
8.3.0 ≤
𝑥
< 8.3.2
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://jira.mongodb.org/browse/SERVER-122032