{"id":"CVE-2021-23417","aliases":["EUVD-2021-1894","GHSA-vj72-mwrj-m2xq"],"status":"published","title":"Prototype Pollution","description":"All versions of package deepmergefn are vulnerable to Prototype Pollution via deepMerge function.","severity":{"version":"3.1","score":5.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:U/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.01083,"percentile":0.65621,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-1321","CWE-915"],"published":"2021-07-28T16:05:12Z","modified":"2026-06-17T03:38:43Z","affected":[{"source":"ghsa","ecosystem":"npm","package":"deepmergefn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.1.0"}]}]},{"source":"osv","ecosystem":"npm","package":"deepmergefn","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"1.1.0"}]}]}],"products":[{"vendor":"deepmergefn_project","product":"deepmergefn"}],"references":[{"url":"https://snyk.io/vuln/SNYK-JS-DEEPMERGEFN-1310984","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","web"]},{"url":"https://github.com/jesusgm/deepmergefn/blob/master/index.js%23L6","tags":["x_refsource_MISC","x_transferred","Broken Link"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-23417","tags":["advisory"]},{"url":"https://github.com/jesusgm/deepmergefn/blob/master/index.js#23L6","tags":["web"]},{"url":"https://github.com/advisories/GHSA-vj72-mwrj-m2xq"},{"url":"https://github.com/jesusgm/deepmergefn","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2021-23417","title":"Prototype Pollution","description":"All versions of package deepmergefn are vulnerable to Prototype Pollution via deepMerge function.","status":"published","published":"2021-07-28T16:05:12.202Z","modified":"2024-09-16T21:07:40.886Z","cvss":[{"version":"3.1","score":5.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:U/RC:C","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T14:33:00.819444Z"}],"euvd":[{"id":"EUVD-2021-1894","description":"All versions of package deepmergefn are vulnerable to Prototype Pollution via deepMerge function.","status":"published","published":"2021-07-28T16:05:12Z","modified":"2024-09-16T21:07:40Z","cvss":[{"version":"3.1","score":5.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:U/RC:C","level":"medium"}],"updated_at":"2026-11-03T00:55:08.067702Z"}],"ghsa":[{"id":"GHSA-vj72-mwrj-m2xq","title":"Prototype Pollution in deepmergefn","description":"All versions of package deepmergefn are vulnerable to Prototype Pollution via deepMerge function.\n\n","status":"published","published":"2021-08-10T16:09:25Z","modified":"2023-02-01T05:06:02Z","cvss":[{"version":"3.1","score":5.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"medium"}],"cwes":["CWE-915","CWE-1321"],"updated_at":"2026-11-02T14:36:36.66596Z"}],"nvd":[{"id":"CVE-2021-23417","description":"All versions of package deepmergefn are vulnerable to Prototype Pollution via deepMerge function.","status":"published","published":"2021-07-28T16:15:08.1Z","modified":"2026-06-17T03:38:43.513Z","cvss":[{"version":"3.1","score":5.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"medium","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T14:06:56.185362Z"}],"osv":[{"id":"GHSA-vj72-mwrj-m2xq","title":"Prototype Pollution in deepmergefn","description":"All versions of package deepmergefn are vulnerable to Prototype Pollution via deepMerge function.\n\n","status":"published","published":"2021-08-10T16:09:25Z","modified":"2023-11-08T04:05:08.435536Z","cvss":[{"version":"3.1","score":5.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"medium"}],"cwes":["CWE-1321","CWE-915"],"updated_at":"2026-11-02T15:46:57.348035Z"}]}}