Vulnerability Details CVE-2026-88035
A size check in the client-side authentication path of the MongoDB C Driver can wrap around, so an unusually large user-name value is accepted and copied past the end of a small buffer. A party able to set the driver's connection settings may cause the application that embeds the driver to terminate unexpectedly. Reaching this code requires a build in which the optional external SASL authentication backend is present and a connection configured to use it.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 1.1%
CVSS Severity
CVSS v3 Score 4.7
References
Products affected by CVE-2026-88035
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cpe:2.3:a:mongodb:c_driver:1.10.0
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cpe:2.3:a:mongodb:c_driver:1.10.1
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cpe:2.3:a:mongodb:c_driver:1.10.2
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cpe:2.3:a:mongodb:c_driver:1.10.3
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cpe:2.3:a:mongodb:c_driver:1.11.0
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cpe:2.3:a:mongodb:c_driver:1.12.0
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cpe:2.3:a:mongodb:c_driver:1.13.0
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cpe:2.3:a:mongodb:c_driver:1.13.1
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cpe:2.3:a:mongodb:c_driver:1.14.0
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cpe:2.3:a:mongodb:c_driver:1.14.1
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cpe:2.3:a:mongodb:c_driver:1.15.0
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cpe:2.3:a:mongodb:c_driver:1.15.1
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cpe:2.3:a:mongodb:c_driver:1.15.2
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cpe:2.3:a:mongodb:c_driver:1.15.3
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cpe:2.3:a:mongodb:c_driver:1.16.0
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cpe:2.3:a:mongodb:c_driver:1.16.1
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cpe:2.3:a:mongodb:c_driver:1.16.2
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cpe:2.3:a:mongodb:c_driver:1.17.0
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cpe:2.3:a:mongodb:c_driver:1.17.1
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cpe:2.3:a:mongodb:c_driver:1.17.2
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cpe:2.3:a:mongodb:c_driver:1.17.3
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cpe:2.3:a:mongodb:c_driver:1.17.4
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cpe:2.3:a:mongodb:c_driver:1.17.5
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cpe:2.3:a:mongodb:c_driver:1.17.6
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cpe:2.3:a:mongodb:c_driver:1.17.7
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cpe:2.3:a:mongodb:c_driver:1.18.0
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cpe:2.3:a:mongodb:c_driver:1.19.0
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cpe:2.3:a:mongodb:c_driver:1.19.1
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cpe:2.3:a:mongodb:c_driver:1.19.2
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cpe:2.3:a:mongodb:c_driver:1.20.0
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cpe:2.3:a:mongodb:c_driver:1.20.1
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cpe:2.3:a:mongodb:c_driver:1.21.0
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cpe:2.3:a:mongodb:c_driver:1.21.1
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cpe:2.3:a:mongodb:c_driver:1.21.2
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cpe:2.3:a:mongodb:c_driver:1.22.0
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cpe:2.3:a:mongodb:c_driver:1.22.1
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cpe:2.3:a:mongodb:c_driver:1.22.2
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cpe:2.3:a:mongodb:c_driver:1.23.0
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cpe:2.3:a:mongodb:c_driver:1.23.1
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cpe:2.3:a:mongodb:c_driver:1.23.2
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cpe:2.3:a:mongodb:c_driver:1.23.3
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cpe:2.3:a:mongodb:c_driver:1.23.4
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cpe:2.3:a:mongodb:c_driver:1.23.5
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cpe:2.3:a:mongodb:c_driver:1.24.0
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cpe:2.3:a:mongodb:c_driver:1.24.1
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cpe:2.3:a:mongodb:c_driver:1.24.2
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cpe:2.3:a:mongodb:c_driver:1.24.3
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cpe:2.3:a:mongodb:c_driver:1.24.4
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cpe:2.3:a:mongodb:c_driver:1.25.0
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cpe:2.3:a:mongodb:c_driver:1.25.1
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cpe:2.3:a:mongodb:c_driver:1.25.2
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cpe:2.3:a:mongodb:c_driver:1.25.3
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cpe:2.3:a:mongodb:c_driver:1.25.4
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cpe:2.3:a:mongodb:c_driver:1.26.0
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cpe:2.3:a:mongodb:c_driver:1.26.1
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cpe:2.3:a:mongodb:c_driver:1.26.2
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cpe:2.3:a:mongodb:c_driver:1.27.0
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cpe:2.3:a:mongodb:c_driver:1.27.1
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cpe:2.3:a:mongodb:c_driver:1.27.2
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cpe:2.3:a:mongodb:c_driver:1.27.3
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cpe:2.3:a:mongodb:c_driver:1.27.4
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cpe:2.3:a:mongodb:c_driver:1.27.5
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cpe:2.3:a:mongodb:c_driver:1.27.6
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cpe:2.3:a:mongodb:c_driver:1.28.0
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cpe:2.3:a:mongodb:c_driver:1.28.1
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cpe:2.3:a:mongodb:c_driver:1.29.0
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cpe:2.3:a:mongodb:c_driver:1.29.1
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cpe:2.3:a:mongodb:c_driver:1.29.2
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cpe:2.3:a:mongodb:c_driver:1.30.0
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cpe:2.3:a:mongodb:c_driver:1.30.1
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cpe:2.3:a:mongodb:c_driver:1.30.2
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cpe:2.3:a:mongodb:c_driver:1.30.3
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cpe:2.3:a:mongodb:c_driver:1.30.4
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cpe:2.3:a:mongodb:c_driver:1.30.5
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cpe:2.3:a:mongodb:c_driver:1.30.6
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cpe:2.3:a:mongodb:c_driver:1.30.7
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cpe:2.3:a:mongodb:c_driver:1.30.8
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cpe:2.3:a:mongodb:c_driver:1.30.9