{"id":"CVE-2021-23396","aliases":["EUVD-2021-1256","GHSA-3r8w-mphv-2f3f"],"status":"published","title":"Prototype Pollution","description":"All versions of package lutils are vulnerable to Prototype Pollution via the main (merge) 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:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.01003,"percentile":0.63221,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-1321"],"published":"2021-06-17T16:15:10Z","modified":"2026-06-17T03:38:41Z","affected":[{"source":"ghsa","ecosystem":"npm","package":"lutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"2.4.0"}]}]},{"source":"osv","ecosystem":"npm","package":"lutils","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"2.4.0"}]}]}],"products":[{"vendor":"lutils_project","product":"lutils"}],"references":[{"url":"https://snyk.io/vuln/SNYK-JS-LUTILS-1311023","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-23396","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-3r8w-mphv-2f3f"}],"sources":{"cve":[{"id":"CVE-2021-23396","title":"Prototype Pollution","description":"All versions of package lutils are vulnerable to Prototype Pollution via the main (merge) function.","status":"published","published":"2021-06-17T16:15:10.405Z","modified":"2024-09-16T18:59:42.541Z","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:O/RC:C","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T14:33:00.488332Z"}],"euvd":[{"id":"EUVD-2021-1256","description":"All versions of package lutils are vulnerable to Prototype Pollution via the main (merge) function.","status":"published","published":"2021-06-17T16:15:10Z","modified":"2024-09-16T18:59:42Z","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:O/RC:C","level":"medium"}],"updated_at":"2026-11-03T00:55:27.162689Z"}],"ghsa":[{"id":"GHSA-3r8w-mphv-2f3f","title":"Prototype Pollution in lutils","description":"All versions of package lutils are vulnerable to Prototype Pollution via the main (merge) function.","status":"published","published":"2021-06-21T17:12:25Z","modified":"2023-08-17T05:02:30Z","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"],"updated_at":"2026-11-02T14:37:00.074932Z"}],"nvd":[{"id":"CVE-2021-23396","description":"All versions of package lutils are vulnerable to Prototype Pollution via the main (merge) function.","status":"published","published":"2021-06-17T17:15:07.427Z","modified":"2026-06-17T03:38:41.167Z","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":"2026-11-02T14:06:54.892562Z"}],"osv":[{"id":"GHSA-3r8w-mphv-2f3f","title":"Prototype Pollution in lutils","description":"All versions of package lutils are vulnerable to Prototype Pollution via the main (merge) function.","status":"published","published":"2021-06-21T17:12:25Z","modified":"2026-03-13T22:11:51.91993Z","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"],"updated_at":"2026-11-02T15:46:36.092962Z"}]}}