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.

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Fixes

Solution

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Workaround

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History

Wed, 10 Jun 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 10 Jun 2026 11:30:00 +0000

Type Values Removed Values Added
First Time appeared Mongodb
Mongodb mongodb Server
Vendors & Products Mongodb
Mongodb mongodb Server

Tue, 09 Jun 2026 22:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Client side encryption fails to encrypt values in a $vectorSearch
Weaknesses CWE-319
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}

cvssV4_0

{'score': 7.1, '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'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: mongodb

Published:

Updated: 2026-06-10T13:21:39.157Z

Reserved: 2026-05-27T17:33:47.392Z

Link: CVE-2026-9741

cve-icon Vulnrichment

Updated: 2026-06-10T13:21:33.839Z

cve-icon NVD

Status : Received

Published: 2026-06-09T23:17:03.583

Modified: 2026-06-09T23:17:03.583

Link: CVE-2026-9741

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-10T11:21:57Z

Weaknesses