CVE-2026-81518
BI Connector Optional Client Certificate Verification Allows Unauthenticated Connections
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-295 |
| Vendor | mongodb |
| Product | bi connector |
| Ecosystems | |
| Industries | Technology |
| Published | Aug 28, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
MongoDB / BI Connector
0 < 2.14.31