When mongosqld is configured with a client certificate authority file, the listener requests a client certificate during the TLS handshake but does not require one, so a client that presents no certificate is still accepted. In deployments that rely on client certificates as the sole means of identifying users, a remote party with network access to the listener can therefore establish a session and read the MongoDB data exposed through the connector.
History

Sat, 29 Aug 2026 00:15:00 +0000

Type Values Removed Values Added
First Time appeared Mongodb
Mongodb bi Connector
Vendors & Products Mongodb
Mongodb bi Connector

Fri, 28 Aug 2026 22:00:00 +0000

Type Values Removed Values Added
Description When mongosqld is configured with a client certificate authority file, the listener requests a client certificate during the TLS handshake but does not require one, so a client that presents no certificate is still accepted. In deployments that rely on client certificates as the sole means of identifying users, a remote party with network access to the listener can therefore establish a session and read the MongoDB data exposed through the connector.
Title BI Connector Optional Client Certificate Verification Allows Unauthenticated Connections
Weaknesses CWE-295
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: mongodb

Published:

Updated: 2026-08-28T20:18:14.870Z

Reserved: 2026-08-26T22:07:10.996Z

Link: CVE-2026-81518

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-28T22:16:54.510

Modified: 2026-08-28T22:16:54.510

Link: CVE-2026-81518

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-29T00:30:17Z