{"id":"CVE-2026-25611","aliases":["EUVD-2026-7056","GHSA-x39r-jq9q-xvvh","UBUNTU-CVE-2026-25611"],"status":"published","title":"Pre-Authentication Memory Exhaustion Denial of Service in MongoDB Server","description":"A series of specifically crafted, unauthenticated messages can exhaust available memory and crash a MongoDB server.","severity":{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00861,"percentile":0.5884,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-405"],"published":"2026-02-10T17:52:47Z","modified":"2026-06-17T10:24:57Z","affected":[{"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 inc","product":"mongodb server"},{"vendor":"mongodb, inc.","product":"mongodb server"}],"references":[{"url":"https://jira.mongodb.org/browse/SERVER-116210","tags":["report"]},{"url":"https://jira.mongodb.org/browse/SERVER-116206","tags":["report"]},{"url":"https://jira.mongodb.org/browse/SERVER-116211","tags":["report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-25611"},{"url":"https://github.com/advisories/GHSA-x39r-jq9q-xvvh"},{"url":"https://ubuntu.com/security/CVE-2026-25611","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-25611","tags":["report"]},{"url":"https://jira.mongodb.org/browse/SERVER-119396","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-25611","title":"Pre-Authentication Memory Exhaustion Denial of Service in MongoDB Server","description":"A series of specifically crafted, unauthenticated messages can exhaust available memory and crash a MongoDB 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