Vulnerability in MongoDB C# Driver Impacts Application Filtering

CVE-2026-88026

What is CVE-2026-88026?

The MongoDB C# Driver contains a security flaw related to improper handling of regular-expression metacharacters within its LINQ query translation component. This vulnerability allows an authenticated user to manipulate character sequences, which can inadvertently alter intended regular-expression predicates. As a result, the application may return excessive records beyond what was originally meant to be filtered. This presents a significant risk as it can lead to unintended data exposure, impacting the confidentiality of the application's sensitive information.

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