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    2 vulnerabilities found for MongoDB.Libmongocrypt NuGet package by MongoDB

    CVE-2026-114650 (GCVE-0-2026-114650)

    Vulnerability from nvd – Published: 2026-10-22 19:13 – Updated: 2026-10-22 21:38
    VLAI
    Title
    Plaintext exposure of encrypted fields via ANSI code-page corruption of database name
    Summary
    A flaw in the client-side encryption support of the MongoDB .NET/C# driver can cause data designated for client-side field-level encryption to be written without encryption. Under certain platform text-encoding configurations, an internal name conversion loses information, so the encryption layer fails to associate the operation with its configured encryption rules and the operation proceeds without an error being raised. An application user with the ability to write data through an affected application can therefore have sensitive fields persisted in plaintext, defeating the confidentiality guarantee that client-side encryption is intended to provide. No integrity or availability impact was observed.
    Severity
    6.9 (Medium)
    CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
    5.9 (Medium)
    CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
    CWE
    • CWE-838 - Inappropriate Encoding for Output Context
    Assigner
    mongodb CNA under the mitre root
    CNA scorecard C 70/100 over 219 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    MongoDB C# Driver Affected: 2.10.0 , < 3.13.0 (semver)
    		Create a notification for this product.
    MongoDB MongoDB.Libmongocrypt NuGet package Affected: 1.0.0 , ≤ 1.12.0 (semver)
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-114650 (GCVE-0-2026-114650)

    Vulnerability from cvelistv5 – Published: 2026-10-22 19:13 – Updated: 2026-10-22 21:38
    VLAI
    Title
    Plaintext exposure of encrypted fields via ANSI code-page corruption of database name
    Summary
    A flaw in the client-side encryption support of the MongoDB .NET/C# driver can cause data designated for client-side field-level encryption to be written without encryption. Under certain platform text-encoding configurations, an internal name conversion loses information, so the encryption layer fails to associate the operation with its configured encryption rules and the operation proceeds without an error being raised. An application user with the ability to write data through an affected application can therefore have sensitive fields persisted in plaintext, defeating the confidentiality guarantee that client-side encryption is intended to provide. No integrity or availability impact was observed.
    Severity
    6.9 (Medium)
    CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
    5.9 (Medium)
    CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
    CWE
    • CWE-838 - Inappropriate Encoding for Output Context
    Assigner
    mongodb CNA under the mitre root
    CNA scorecard C 70/100 over 219 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    MongoDB C# Driver Affected: 2.10.0 , < 3.13.0 (semver)
    		Create a notification for this product.
    MongoDB MongoDB.Libmongocrypt NuGet package Affected: 1.0.0 , ≤ 1.12.0 (semver)
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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