CVE-2026-9741CWE-319

Client side encryption fails to encrypt values in a $vectorSearch

High · published June 9, 2026

CVSS v4.0
7.1
EPSS
0%
Percentile
4.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
7.1 · HIGH
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
EPSS
0.00159 · 4.7th percentile
Weakness
CWE-319 · Cleartext Transmission of Sensitive Information
Published
2026-06-09T21:56Z
EPSS history
Timeline
  • 09 JUN 21:56Z
    Client side encryption fails to encrypt values in a $vectorSearch
    cvelistv5