{"id":"CVE-2026-96746","revision":"3cfddbefd73f40748d5b0c18578702f7","records":[{"revision":"3cfddbefd73f40748d5b0c18578702f7","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-96746","aliases":[],"title":"Heap buffer overflow via mid-scan command list growth in client topology monitoring","description":"An out-of-bounds write in the connection-monitoring logic of the MongoDB C Driver may allow an unauthenticated party who controls name resolution and the responses of the hosts named in a client's connection string to write beyond the end of a heap buffer. This may cause the application using the driver to terminate unexpectedly.","state":0,"publishedAt":"2026-09-24T15:51:15.196+00:00","modifiedAt":"2026-09-24T18:18:08.886+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\": \"0\",\n                            \"lessThan\": \"1.30.12\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"2.0.0\",\n                            \"lessThan\": \"2.5.5\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N","score":8.3,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H","score":6.5,"severity":"MEDIUM"}],"references":["https://github.com/mongodb/mongo-c-driver/security/advisories/GHSA-frjf-h5jg-4v46","https://github.com/mongodb/mongo-c-driver/releases/tag/1.30.12","https://github.com/mongodb/mongo-c-driver/releases/tag/2.5.5"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-96746","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-96746","identifiers":["CVE-2026-96746"]},"retained":false,"historicalAffected":[]}],"coverage":[]}