{"id":"CVE-2026-106429","revision":"1bab64ed77d842f5b440f2fcd7e34bf5","records":[{"revision":"1bab64ed77d842f5b440f2fcd7e34bf5","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-106429","aliases":[],"title":"Application denial of service via malformed KMS endpoint in MongoDB libmongocrypt","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.","state":0,"publishedAt":"2026-10-08T18:54:10.237+00:00","modifiedAt":"2026-10-08T19:30:01.396+00:00","affected":[{"ecosystem":"Vendor product","name":"libmongocrypt","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"MongoDB\",\n                    \"product\": \"libmongocrypt\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"1.1.0\",\n                            \"lessThan\": \"1.20.5\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":7.1,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":6.5,"severity":"MEDIUM"}],"references":["https://jira.mongodb.org/browse/MONGOCRYPT-986"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-106429","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-106429","identifiers":["CVE-2026-106429"]},"retained":false,"historicalAffected":[]}],"coverage":[]}