MongoDBCVE-2026-81518
MongoDB BI Connector: improper certificate validation
High8.7CVE-2026-81518 · Published Aug 28, 2026 · updated Sep 1, 2026
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.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| BI Connector Product | < 2.14.31 | 2.14.31 |
Details and references
- CVSS 4.0
- 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-295
More MongoDB advisories
All MongoDB| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Aug 28 | MongoDB BI Connector: null pointer dereference | High8.3 | 2.14.31 |
| Aug 28 | An unauthenticated party able to reach the port of a MongoDB Connector for BI | High8.7 | 2.14.31 |
| Aug 28 | A network-reachable client | High8.7 | 2.14.31 |
| Aug 28 | MongoDB BI Connector ODBC Driver: stack buffer overflow | High8.7 | 1.4.10 |
| Aug 28 | MongoDB BI Connector ODBC Driver: stack buffer overflow | Medium6.0 | 1.4.10 |
| Aug 28 | MongoDB BI Connector: SQL injection | High8.5 | 2.14.31 |