Vulnerability Details CVE-2026-81518
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 15.2%
CVSS Severity
CVSS v3 Score 7.5
Products affected by CVE-2026-81518
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cpe:2.3:a:mongodb:bi_connector:2.0.0
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cpe:2.3:a:mongodb:bi_connector:2.1.0
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cpe:2.3:a:mongodb:bi_connector:2.10.0
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cpe:2.3:a:mongodb:bi_connector:2.11.0
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cpe:2.3:a:mongodb:bi_connector:2.11.1
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cpe:2.3:a:mongodb:bi_connector:2.12.0
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cpe:2.3:a:mongodb:bi_connector:2.13.0
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cpe:2.3:a:mongodb:bi_connector:2.13.1
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cpe:2.3:a:mongodb:bi_connector:2.13.2
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cpe:2.3:a:mongodb:bi_connector:2.13.3
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cpe:2.3:a:mongodb:bi_connector:2.13.4
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cpe:2.3:a:mongodb:bi_connector:2.14.0
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cpe:2.3:a:mongodb:bi_connector:2.14.1
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cpe:2.3:a:mongodb:bi_connector:2.14.10
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cpe:2.3:a:mongodb:bi_connector:2.14.11
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cpe:2.3:a:mongodb:bi_connector:2.14.12
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cpe:2.3:a:mongodb:bi_connector:2.14.13
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cpe:2.3:a:mongodb:bi_connector:2.14.14
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cpe:2.3:a:mongodb:bi_connector:2.14.15
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cpe:2.3:a:mongodb:bi_connector:2.14.16
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cpe:2.3:a:mongodb:bi_connector:2.14.17
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cpe:2.3:a:mongodb:bi_connector:2.14.18
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cpe:2.3:a:mongodb:bi_connector:2.14.19
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cpe:2.3:a:mongodb:bi_connector:2.14.2
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cpe:2.3:a:mongodb:bi_connector:2.14.22
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cpe:2.3:a:mongodb:bi_connector:2.14.23
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cpe:2.3:a:mongodb:bi_connector:2.14.24
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cpe:2.3:a:mongodb:bi_connector:2.14.25
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cpe:2.3:a:mongodb:bi_connector:2.14.26
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cpe:2.3:a:mongodb:bi_connector:2.14.27
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cpe:2.3:a:mongodb:bi_connector:2.14.28
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cpe:2.3:a:mongodb:bi_connector:2.14.29
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cpe:2.3:a:mongodb:bi_connector:2.14.3
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cpe:2.3:a:mongodb:bi_connector:2.14.30
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cpe:2.3:a:mongodb:bi_connector:2.14.4
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cpe:2.3:a:mongodb:bi_connector:2.14.5
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cpe:2.3:a:mongodb:bi_connector:2.14.6
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cpe:2.3:a:mongodb:bi_connector:2.14.7
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cpe:2.3:a:mongodb:bi_connector:2.14.8
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cpe:2.3:a:mongodb:bi_connector:2.14.9
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cpe:2.3:a:mongodb:bi_connector:2.2.0
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cpe:2.3:a:mongodb:bi_connector:2.2.1
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cpe:2.3:a:mongodb:bi_connector:2.3.0
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cpe:2.3:a:mongodb:bi_connector:2.3.1
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cpe:2.3:a:mongodb:bi_connector:2.4.0
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cpe:2.3:a:mongodb:bi_connector:2.4.1
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cpe:2.3:a:mongodb:bi_connector:2.5.0
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cpe:2.3:a:mongodb:bi_connector:2.6.0
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cpe:2.3:a:mongodb:bi_connector:2.6.1
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cpe:2.3:a:mongodb:bi_connector:2.7.0
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cpe:2.3:a:mongodb:bi_connector:2.8.0
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cpe:2.3:a:mongodb:bi_connector:2.8.1
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cpe:2.3:a:mongodb:bi_connector:2.8.2
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cpe:2.3:a:mongodb:bi_connector:2.9.0