Skip to content
OpenAdvisories
Medium · 6.5 CVE-2026-88026 EUVD-2026-75640GHSA-j7j2-rrxf-5xvf

Regular expression injection via unescaped characters in LINQ query translation in MongoDB C# Driver

Published Sep 10, 2026 · Updated Sep 10, 2026 · Assigned by mongodb

Description

Improper neutralization of regular-expression metacharacters in the LINQ query translation component of the MongoDB C# Driver can cause a caller-supplied character sequence to alter a regular-expression predicate generated by an affected application. An authenticated user who can influence such a value may cause the application to return records beyond those intended by the original filter.

Affected products

VendorProductAffectedFixed
MongoDB C# Driver 2.14.0 – ≤ 3.11.1 —

Advisories 1

References