CVE-2026-81518BI Connector Optional Client Certificate Verification Allows Unauthenticated Connections
Updated under an hour ago ()
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It affects MongoDB BI Connector. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weakness (CWE)
- CWE-295
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- mongodb
- NVD analysis
- Analyzed
- Record last updated
- Aug 31, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
MongoDB BI Connector mongodb:bi_connector (from the name) | before 2.14.31 | CNA record |
mongodb bi_connector mongodb:bi_connector | before 2.14.31 | NVD |
References
- https://www.mongodb.com/docs/bi-connector/current/release-notes/vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.