CVE-2026-81518 — BI Connector Optional Client Certificate Verification Allows Unauthenticated Connections
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 …
Published: 2026-08-28 · CVSS: 8.7 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7