CVE-2026-9741 HIGH

CVE-2026-9741: Client side encryption fails to encrypt values in a $vectorSearch

Vendor Mongodb
Product MongoDB Server
Weakness CWE-319 · Cleartext transmission
Published June 9, 2026
Last update June 10, 2026
View on NVD All CVEs

CVSS base score

7.1/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

What the vulnerability does

01Description

A bug in query analysis processing of the $vectorSearch aggregation stage for Queryable Encryption (QE) or Client-Side Field Level Encryption (CSFLE) results in literal values for encrypted fields within the $vectorSearch stage filter expressions to be sent to the server as plaintext instead of ciphertext.

Key dates

02Disclosure timeline

June 9, 2026 CVE published
June 10, 2026 Record updated