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4 vulnerabilities found for C# Driver by MongoDB

CVE-2026-81530 (GCVE-0-2026-81530)
Vulnerability from cvelistv5
Published
2026-08-27 18:32
Modified
2026-08-28 15:44
Severity ?
6.8 (Medium) - CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
5.6 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
CWE
  • CWE-532 - Insertion of Sensitive Information into Log File
Summary
A weakness in the client-side encryption configuration surface of the MongoDB C# Driver causes sensitive key-management credential material supplied by the application to be reproduced verbatim in the driver's human-readable diagnostic representation of its client settings, instead of being masked as other secret fields are. A party able to read the application's logs, diagnostic output, or a process memory dump may thereby recover the plaintext credentials and use them to decrypt protected field data.
References
Impacted products
Vendor Product Version
MongoDB C# Driver Version: 2.10.0   ≤
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CVE-2026-81529 (GCVE-0-2026-81529)
Vulnerability from cvelistv5
Published
2026-08-27 18:32
Modified
2026-08-28 16:37
Severity ?
7.1 (High) - CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N
7.1 (High) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N
CWE
  • CWE-88 - Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
Summary
Improper neutralization of delimiters in connection-URL construction allows connection-option injection in the MongoDB C# Driver. When an application passes untrusted text into the driver's connection-URL builder and round-trips the builder back into a client configuration, the untrusted text is serialized without neutralizing the URL/option delimiters and is then re-parsed as authoritative connection options. A low-privileged user of such an application can thereby introduce or suppress security-relevant connection settings.
References
Impacted products
Vendor Product Version
MongoDB C# Driver Version: 2.0.0   ≤
Create a notification for this product.
Show details on NVD website

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CVE-2026-81528 (GCVE-0-2026-81528)
Vulnerability from cvelistv5
Published
2026-08-27 18:32
Modified
2026-08-28 15:45
Severity ?
5.3 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
5.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
CWE
  • CWE-943 - Improper Neutralization of Special Elements in Data Query Logic
Summary
A MongoDB C# driver document-replacement code path omits the element-name/shape validation that the equivalent write paths apply, so a value supplied as a replacement is forwarded to the server without neutralization of query-language special elements. An application that passes untrusted, loosely-typed input as a replacement value therefore allows that input to be interpreted by the database as update logic rather than as data, executing under the application's own database credentials. Applications using strongly-typed document mappings are not affected.
References
Impacted products
Vendor Product Version
MongoDB C# Driver Version: 2.9.0   ≤
Create a notification for this product.
Show details on NVD website

To clipboard 

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CVE-2026-81527 (GCVE-0-2026-81527)
Vulnerability from cvelistv5
Published
2026-08-27 18:32
Modified
2026-08-28 15:46
Severity ?
6.9 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE
  • CWE-943 - Improper Neutralization of Special Elements in Data Query Logic
Summary
A NoSQL/expression injection weakness exists in the LINQ-to-aggregation query translation layer of the MongoDB C# Driver, in both aggregation expression and query filter translation. When application-supplied values are embedded in certain query constructs, special elements contained within those values are not properly escaped before the resulting query is transmitted to the database, so portions of the value may be interpreted by the database as query logic rather than as data. A user able to supply values that an application incorporates into an affected query may thereby cause unintended data to be returned or query results to be altered.
References
Impacted products
Vendor Product Version
MongoDB C# Driver Version: 2.14.0   ≤
Create a notification for this product.
Show details on NVD website

To clipboard 

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        "orgId": "a39b4221-9bd0-4244-95fc-f3e2e07f1deb",
        "shortName": "mongodb"
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          "url": "https://jira.mongodb.org/browse/CSHARP-6156"
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        {
          "url": "https://www.nuget.org/packages/MongoDB.Driver/3.11.1"
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    "dateReserved": "2026-08-26T22:14:18.098Z",
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