{"id":"CVE-2026-106438","revision":"0b2796ce310048a5aaead3720bd01f0a","records":[{"revision":"0b2796ce310048a5aaead3720bd01f0a","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-106438","aliases":[],"title":"Silent Decimal128 value corruption via incorrect exactness check in MongoDB C Driver","description":"An incorrect calculation in Decimal128 string parsing in the MongoDB C Driver can accept certain over-precision inputs containing leading zeros instead of rejecting them. This produces a value different from the supplied text. An actor who can provide a decimal string to an embedding application, including through Extended JSON parsing, can cause the application to store or use an incorrect numeric value.","state":0,"publishedAt":"2026-10-08T18:44:05.629+00:00","modifiedAt":"2026-10-08T19:21:43.595+00:00","affected":[{"ecosystem":"Vendor product","name":"C Driver","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"MongoDB\",\n                    \"product\": \"C Driver\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"1.4.0\",\n                            \"lessThan\": \"1.30.13\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"2.0.0\",\n                            \"lessThan\": \"2.5.6\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","score":5.1,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","score":4,"severity":"MEDIUM"}],"references":["https://jira.mongodb.org/browse/CDRIVER-6419"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-106438","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-106438","identifiers":["CVE-2026-106438"]},"retained":false,"historicalAffected":[]}],"coverage":[]}