{"id":"CVE-2026-106429","published":"2026-10-08T19:16:58.750","lastModified":"2026-10-08T20:49:23.240","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.","cvssScore":6.5,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwes":["CWE-191"],"vendors":[],"products":[],"references":[{"url":"https://jira.mongodb.org/browse/MONGOCRYPT-986","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}