{"id":"CVE-2026-96746","title":"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 en…","summary":"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 en…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H","cwe":["CWE-787"],"vendor":"MongoDB","product":"C Driver","affected":["c_driver < 1.30.12","c_driver >= 2.0.0 < 2.5.5"],"published":"2026-09-24","updated":"2026-09-24","sourceUpdated":"2026-09-24T21:04:40.340","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-96746","references":[{"url":"https://github.com/mongodb/mongo-c-driver/releases/tag/1.30.12","label":"cna@mongodb.com"},{"url":"https://github.com/mongodb/mongo-c-driver/releases/tag/2.5.5","label":"cna@mongodb.com"},{"url":"https://github.com/mongodb/mongo-c-driver/security/advisories/GHSA-frjf-h5jg-4v46","label":"cna@mongodb.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-24T17:10:23.359575Z"},"ingestedAt":"2026-09-24T16:47:15.845Z","slug":"CVE-2026-96746","body":"## Overview\n\nAn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}