{"id":"CVE-2026-9100","title":"The MongoDB C Driver's legacy GridFS API accepts malformed file metadata from the database without adequate validation","summary":"The MongoDB C Driver's legacy GridFS API accepts malformed file metadata from the database without adequate validation. Crafted documents in a GridFS collection may cause any application that reads those files via the legacy API to eithe…","severity":"medium","cvss":5.9,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:H","cwe":["CWE-1285"],"published":"2026-05-20","updated":"2026-07-23","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-9100","references":[{"url":"https://jira.mongodb.org/browse/CDRIVER-6281","label":"cna@mongodb.com"}],"tags":["nvd"],"epss":0.00295,"epssPercentile":0.22276,"ingestedAt":"2026-07-23T12:17:55.502Z","slug":"CVE-2026-9100","body":"## Overview\n\nThe MongoDB C Driver's legacy GridFS API accepts malformed file metadata from the database without adequate validation. Crafted documents in a GridFS collection may cause any application that reads those files via the legacy API to either crash (via a division-by-zero) or silently leak process memory contents (via an out-of-bounds read).\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":33,"depthScoreParts":{"impact":32.5,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}