{"id":"CVE-2018-16469","aliases":["EUVD-2018-0749","GHSA-f9cm-qmx5-m98h","ROOT-APP-NPM-CVE-2018-16469","UBUNTU-CVE-2018-16469"],"status":"published","title":"Prototype Pollution in merge","description":"The merge.recursive function in the merge package \u003c1.2.1 can be tricked into adding or modifying properties of the Object prototype. These properties will be present on all objects allowing for a denial of service attack.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01678,"percentile":0.77072,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-1321","CWE-20","CWE-400"],"published":"2018-10-30T21:00:00Z","modified":"2026-10-24T10:30:40Z","fixes":[{"ecosystem":"npm","package":"merge","fixed_in":["1.2.1"],"sources":["ghsa","osv"]},{"ecosystem":"Root:npm","package":"@rootio/merge","fixed_in":["1.2.1-root.io.1","1.2.1-root.io.2"],"sources":["osv"]},{"ecosystem":"Root:npm","package":"merge","fixed_in":["1.2.1-aikido.2"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"merge","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.1"}]}]},{"source":"osv","ecosystem":"npm","package":"merge","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.2.1"}]}]},{"source":"osv","ecosystem":"Root:npm","package":"@rootio/merge","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.1-root.io.1"},{"fixed":"1.2.1-root.io.2"}]}]},{"source":"osv","ecosystem":"Root:npm","package":"merge","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.1-aikido.2"}]}]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"node-merge","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.0-1","1.2.0-2"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"node-merge","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.0-2"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"node-merge","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.0-2"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"node-merge","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.0+ds-3","2.1.1+ds-2"]}],"products":[{"vendor":"brikcss","product":"merge"},{"vendor":"hackerone","product":"merge"},{"vendor":"merge_project","product":"merge"}],"references":[{"url":"https://hackerone.com/reports/381194","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence","web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-16469","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-f9cm-qmx5-m98h","tags":["advisory"]},{"url":"https://www.npmjs.com/advisories/722","tags":["web","report"]},{"url":"https://ubuntu.com/security/CVE-2018-16469","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-16469","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2018-16469","description":"The merge.recursive function in the merge package \u003c1.2.1 can be tricked into adding or modifying properties of the Object prototype. These properties will be present on all objects allowing for a denial of service attack.","status":"published","published":"2018-10-30T21:00:00Z","modified":"2024-08-05T10:24:32.373Z","cwes":["CWE-400"],"updated_at":"2026-11-02T14:35:11.072321Z"}],"euvd":[{"id":"EUVD-2018-0749","description":"The merge.recursive function in the merge package \u003c1.2.1 can be tricked into adding or modifying properties of the Object prototype. These properties will be present on all objects allowing for a denial of service attack.","status":"published","published":"2018-10-30T21:00:00Z","modified":"2024-08-05T10:24:32Z","updated_at":"2026-11-03T02:39:41.750379Z"}],"ghsa":[{"id":"GHSA-f9cm-qmx5-m98h","title":"Prototype Pollution in merge","description":"Versions of `merge` before 1.2.1 are vulnerable to prototype pollution. The `merge.recursive` function can be tricked into adding or modifying properties of the Object prototype.\n\n\n## Recommendation\n\nUpdate to version 1.2.1 or later.","status":"published","published":"2018-11-01T14:45:42Z","modified":"2023-09-07T20:34:11Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-400","CWE-1321"],"updated_at":"2026-11-02T14:37:03.287418Z"}],"nvd":[{"id":"CVE-2018-16469","description":"The merge.recursive function in the merge package \u003c1.2.1 can be tricked into adding or modifying properties of the Object prototype. These properties will be present on all objects allowing for a denial of service attack.","status":"published","published":"2018-10-30T21:29:00.997Z","modified":"2026-06-17T01:44:20.833Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-400","CWE-20"],"updated_at":"2026-11-02T14:04:47.196456Z"}],"osv":[{"id":"CVE-2018-16469","description":"The merge.recursive function in the merge package \u003c1.2.1 can be tricked into adding or modifying properties of the Object prototype. These properties will be present on all objects allowing for a denial of service attack.","status":"published","published":"2018-10-30T21:29:00.997Z","modified":"2026-10-24T10:30:40.63430732Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:08.533609Z"},{"id":"GHSA-f9cm-qmx5-m98h","title":"Prototype Pollution in merge","description":"Versions of `merge` before 1.2.1 are vulnerable to prototype pollution. The `merge.recursive` function can be tricked into adding or modifying properties of the Object prototype.\n\n\n## Recommendation\n\nUpdate to version 1.2.1 or later.","status":"published","published":"2018-11-01T14:45:42Z","modified":"2023-11-08T03:59:59.6992Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-1321","CWE-400"],"updated_at":"2026-11-02T15:46:46.39441Z"},{"id":"UBUNTU-CVE-2018-16469","description":"The merge.recursive function in the merge package \u003c1.2.1 can be tricked into adding or modifying properties of the Object prototype. These properties will be present on all objects allowing for a denial of service attack.","status":"published","published":"2018-10-30T21:29:00Z","modified":"2025-10-24T04:47:11Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:17.496046Z"},{"id":"ROOT-APP-NPM-CVE-2018-16469","title":"CVE-2018-16469 in @rootio/merge - Patched by Root","description":"Root has patched CVE-2018-16469 in the @rootio/merge package for Root:npm. Multiple fixed versions available.","status":"published","published":"2026-06-18T12:43:19Z","modified":"2026-06-18T18:15:23.018549063Z","updated_at":"2026-11-02T15:53:27.362922Z"}]}}