{"id":"CVE-2026-18707","aliases":["BIT-mongodb-2026-18707","EUVD-2026-56862","GHSA-4jx5-7652-w3ch","UBUNTU-CVE-2026-18707"],"status":"published","title":"Improper Input Validation in MongoDB Aggregation Command Handling Leads to Denial of Service","description":"An issue in MongoDB Server could allow an authenticated user, including one with no assigned privileges, to cause the server process to terminate unexpectedly by submitting a specially formed aggregation command. This could result in a denial of service.","severity":{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00352,"percentile":0.29201,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-617"],"published":"2026-08-11T18:34:04Z","modified":"2026-10-28T11:08:00Z","fixes":[{"ecosystem":"Bitnami","package":"mongodb","fixed_in":["7.0.40","8.0.29","8.3.8","9.0.2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"mongodb","ranges":[{"type":"SEMVER","events":[{"introduced":"7.0.0"},{"fixed":"7.0.40"},{"introduced":"8.0.0"},{"fixed":"8.0.29"},{"introduced":"8.2.0"},{"fixed":"8.3.8"},{"introduced":"9.0.0"},{"fixed":"9.0.2"}]}]},{"source":"osv","ecosystem":"Ubuntu:Pro:14.04:LTS","package":"mongodb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:2.4.6-0ubuntu5","1:2.4.6-0ubuntu6","1:2.4.8-1ubuntu1","1:2.4.8-2","1:2.4.9-1","1:2.4.9-1ubuntu1","1:2.4.9-1ubuntu2","1:2.4.9-1ubuntu2+esm2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"mongodb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:2.6.10-0ubuntu1","1:2.6.10-0ubuntu1+esm2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"mongodb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:3.4.7-1","1:3.4.7-1ubuntu1","1:3.4.7-1ubuntu2","1:3.4.7-1ubuntu4","1:3.4.14-3ubuntu1","1:3.4.14-3ubuntu2","1:3.6.3-0ubuntu1","1:3.6.3-0ubuntu1.1","1:3.6.3-0ubuntu1.3","1:3.6.3-0ubuntu1.4","1:3.6.3-0ubuntu1.4+esm1","1:3.6.3-0ubuntu1.4+esm2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"mongodb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu2","1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5","1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.2","1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3","1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3+esm1"]}],"products":[{"vendor":"mongodb","product":"mongodb"},{"vendor":"mongodb","product":"mongodb server"},{"vendor":"mongodb, inc.","product":"mongodb server"}],"references":[{"url":"https://jira.mongodb.org/browse/SERVER-128482","tags":["Vendor Advisory","Issue Tracking","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-18707","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-4jx5-7652-w3ch"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/18xxx/CVE-2026-18707.json","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-18707","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-18707","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-18707","title":"Improper Input Validation in MongoDB Aggregation Command Handling Leads to Denial of Service","description":"An issue in MongoDB Server could allow an authenticated user, including one with no assigned privileges, to cause the server process to terminate unexpectedly by submitting a specially formed aggregation command. 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