{"id":"CVE-2021-20326","aliases":["BIT-mongodb-2021-20326","EUVD-2021-7749","GHSA-vqmx-64jh-5r2h","UBUNTU-CVE-2021-20326"],"status":"published","title":"Specially crafted query may result in a denial of service of mongod","description":"A user authorized to performing a specific type of find query may trigger a denial of service. This issue affects MongoDB Server v4.4 versions prior to 4.4.4.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00948,"percentile":0.61601,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20","CWE-732"],"published":"2021-04-30T09:10:13Z","modified":"2026-10-24T14:51:04Z","fixes":[{"ecosystem":"Bitnami","package":"mongodb","fixed_in":["4.4.4"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"mongodb","ranges":[{"type":"SEMVER","events":[{"introduced":"4.4.0"},{"fixed":"4.4.4"}]}]}],"products":[{"vendor":"mongodb","product":"mongodb"},{"vendor":"mongodb inc.","product":"mongodb server"},{"vendor":"mongodb, inc.","product":"mongodb server"}],"references":[{"url":"https://jira.mongodb.org/browse/SERVER-53929","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Patch","Vendor Advisory","advisory","fix","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-20326","tags":["web"]},{"url":"https://github.com/advisories/GHSA-vqmx-64jh-5r2h"},{"url":"https://ubuntu.com/security/CVE-2021-20326","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-20326","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-20326","title":"Specially crafted query may result in a denial of service of mongod","description":"A user authorized to performing a specific type of find query may trigger a denial of service. This issue affects MongoDB Server v4.4 versions prior to 4.4.4.","status":"published","published":"2021-04-30T09:10:13.589Z","modified":"2024-11-19T14:57:30.781Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:32:55.905855Z"}],"euvd":[{"id":"EUVD-2021-7749","description":"A user authorized to performing a specific type of find query may trigger a denial of service. This issue affects MongoDB Server v4.4 versions prior to 4.4.4.","status":"published","published":"2021-04-30T09:10:13Z","modified":"2024-11-19T14:57:30Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-03T00:04:56.132572Z"}],"ghsa":[{"id":"GHSA-vqmx-64jh-5r2h","title":"A user authorized to performing a specific type of find query may trigger a denial of service....","description":"A user authorized to performing a specific type of find query may trigger a denial of service. This issue affects: MongoDB Inc. MongoDB Server v4.4 versions prior to 4.4.4.","status":"published","published":"2022-05-24T17:49:18Z","modified":"2024-02-01T05:06:40Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-20","CWE-732"],"updated_at":"2026-11-02T14:55:31.245778Z"}],"nvd":[{"id":"CVE-2021-20326","description":"A user authorized to performing a specific type of find query may trigger a denial of service. This issue affects MongoDB Server v4.4 versions prior to 4.4.4.","status":"published","published":"2021-04-30T09:15:07.597Z","modified":"2026-06-17T03:33:40.667Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-20","CWE-732"],"updated_at":"2026-11-02T14:06:52.81233Z"}],"osv":[{"id":"CVE-2021-20326","description":"A user authorized to performing a specific type of find query may trigger a denial of service. This issue affects MongoDB Server v4.4 versions prior to 4.4.4.","status":"published","published":"2021-04-30T09:15:07.597Z","modified":"2026-10-24T14:51:04.138534254Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:18.004149Z"},{"id":"UBUNTU-CVE-2021-20326","description":"A user authorized to performing a specific type of find query may trigger a denial of service. This issue affects MongoDB Server v4.4 versions prior to 4.4.4.","status":"withdrawn","published":"2021-04-30T09:15:00Z","modified":"2026-02-19T19:26:21.198341Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:54:26.29421Z"},{"id":"BIT-mongodb-2021-20326","title":"Specially crafted query may result in a denial of service of mongod","description":"A user authorized to performing a specific type of find query may trigger a denial of service. This issue affects MongoDB Server v4.4 versions prior to 4.4.4.","status":"published","published":"2024-03-06T10:58:14.498Z","modified":"2026-09-08T08:48:14.034236361Z","updated_at":"2026-11-02T15:28:33.072289Z"}]}}