CVE-2026-106429
MEDIUM
NVD
CVSS Score
6.5
Severity
MEDIUM
Published
Oct 08, 2026
Vendor
unknown
Description
An integer underflow in the KMS endpoint-parsing logic of MongoDB libmongocrypt can cause an allocation failure that terminates the application process. This can occur when an authenticated user modifies a key document in the key vault collection, or when an application accepts a KMS endpoint containing a colon after its path or query during key creation. The issue does not access memory outside its allocated bounds.