{"id":"UBUNTU-CVE-2018-3721","details":"lodash node module before 4.17.5 suffers from a Modification of Assumed-Immutable Data (MAID) vulnerability via defaultsDeep, merge, and mergeWith functions, which allows a malicious user to modify the prototype of \"Object\" via __proto__, causing the addition or modification of an existing property that will exist on all objects.","modified":"2025-10-24T04:46:47Z","published":"2018-06-07T02:29:00Z","upstream":["CVE-2018-3721"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-3721"},{"type":"REPORT","url":"https://snyk.io/vuln/npm:lodash:20180130"},{"type":"REPORT","url":"https://github.com/lodash/lodash/commit/d8e069cc3410082e44eb18fcf8e7f3d08ebe1d4a"},{"type":"REPORT","url":"https://www.npmjs.com/advisories/577"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-3721"}],"affected":[{"package":{"name":"node-lodash","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/node-lodash@2.4.1+dfsg-3?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.4.1+dfsg-3"],"ecosystem_specific":{"binaries":[{"binary_name":"libjs-lodash","binary_version":"2.4.1+dfsg-3"},{"binary_name":"node-lodash","binary_version":"2.4.1+dfsg-3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-3721.json"}},{"package":{"name":"node-lodash","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/node-lodash@4.17.4+dfsg-1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.17.4+dfsg-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libjs-lodash","binary_version":"4.17.4+dfsg-1"},{"binary_name":"node-lodash","binary_version":"4.17.4+dfsg-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-3721.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"},{"type":"Ubuntu","score":"medium"}]}