Vulnerability Details CVE-2026-18703
An issue in MongoDB Server could allow a party with a valid client certificate and a corresponding user account to authenticate using a certificate-based authentication method, even when an administrator has configured the server to restrict authentication to other mechanisms. This could allow authentication through a method the administrator intended to disable.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 1.8%
CVSS Severity
CVSS v3 Score 4.2
Products affected by CVE-2026-18703
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cpe:2.3:a:mongodb:mongodb:8.2.0
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cpe:2.3:a:mongodb:mongodb:8.2.1
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cpe:2.3:a:mongodb:mongodb:8.2.10
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cpe:2.3:a:mongodb:mongodb:8.2.11
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cpe:2.3:a:mongodb:mongodb:8.2.12
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cpe:2.3:a:mongodb:mongodb:8.2.2
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cpe:2.3:a:mongodb:mongodb:8.2.3
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cpe:2.3:a:mongodb:mongodb:8.2.4
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cpe:2.3:a:mongodb:mongodb:8.2.5
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cpe:2.3:a:mongodb:mongodb:8.2.6
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cpe:2.3:a:mongodb:mongodb:8.2.7
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cpe:2.3:a:mongodb:mongodb:8.2.9
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cpe:2.3:a:mongodb:mongodb:8.3.0
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cpe:2.3:a:mongodb:mongodb:8.3.1
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cpe:2.3:a:mongodb:mongodb:8.3.2
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cpe:2.3:a:mongodb:mongodb:8.3.3
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cpe:2.3:a:mongodb:mongodb:8.3.4
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cpe:2.3:a:mongodb:mongodb:8.3.7
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cpe:2.3:a:mongodb:mongodb:9.0.0
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cpe:2.3:a:mongodb:mongodb:9.1.0