{"id":"CVE-2026-18692","title":"An issue in MongoDB Server's handling of timeseries bucket lifecycle could allow an authenticated user with write privileges to cause an internal reference to be used after the underlying memory has been freed","summary":"An issue in MongoDB Server's handling of timeseries bucket lifecycle could allow an authenticated user with write privileges to cause an internal reference to be used after the underlying memory has been freed. Subsequent operations coul…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-416"],"vendor":"mongodb","product":"mongodb","affected":["mongodb >= 8.0.0, < 8.0.29","mongodb >= 8.2.0, <= 8.2.12","mongodb >= 8.3.0, < 8.3.8","mongodb = 9.0.0","mongodb = 9.1.0"],"patched":["mongodb 8.3.8"],"published":"2026-08-11","updated":"2026-09-16","sourceUpdated":"2026-09-16T15:16:27.380","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-18692","references":[{"url":"https://jira.mongodb.org/browse/SERVER-129887","label":"cna@mongodb.com"}],"tags":["nvd"],"epss":0.00421,"epssPercentile":0.36111,"ingestedAt":"2026-08-29T19:41:15.561Z","slug":"CVE-2026-18692","body":"## Overview\n\nAn issue in MongoDB Server's handling of timeseries bucket lifecycle could allow an authenticated user with write privileges to cause an internal reference to be used after the underlying memory has been freed. Subsequent operations could then result in a server crash or, potentially, execution of unintended code.\n\n## Affected\n\n- `mongodb >= 8.0.0, < 8.0.29`\n- `mongodb >= 8.2.0, <= 8.2.12`\n- `mongodb >= 8.3.0, < 8.3.8`\n- `mongodb = 9.0.0`\n- `mongodb = 9.1.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `mongodb 8.3.8`","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}