CVE-2026-8201

MEDIUM

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

Title source: cna

Description

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.

References (1)

Core 1

Core References

Issue Tracking issue-tracking

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

Scores

CVSS v3 6.4

EPSS 0.0012

EPSS Percentile 2.3%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-416

Status published

Products (5)

mongodb/mongodb 7.0.0 - 7.0.34

MongoDB, Inc./MongoDB Server 7.0 - 7.0.34

MongoDB, Inc./MongoDB Server 8.0 - 8.0.23

MongoDB, Inc./MongoDB Server 8.2 - 8.2.9

MongoDB, Inc./MongoDB Server 8.3 - 8.3.2

Published May 13, 2026

Tracked Since May 13, 2026