{"id":"CVE-2021-23427","aliases":[],"url":"https://o3.security/vulnerability/CVE-2021-23427","summary":"Imporoper path validation in elFinder.NetCore","details":"This affects all versions of package elFinder.NetCore. The ExtractAsync function within the FileSystem is vulnerable to arbitrary extraction due to insufficient validation.","published":"2021-09-02T22:05:17Z","modified":"2026-03-13T21:56:55.998354Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"NuGet","name":"elFinder.NetCore","fixedVersion":null}],"fix":null,"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-23427"},{"type":"PACKAGE","url":"https://github.com/gordon-matt/elFinder.NetCore"},{"type":"WEB","url":"https://github.com/gordon-matt/elFinder.NetCore/blob/633da9a4d7d5c9baefd1730ee51bf7af54889600/elFinder.NetCore/Drivers/FileSystem/FileSystemDriver.cs#L226"},{"type":"WEB","url":"https://github.com/gordon-matt/elFinder.NetCore/blob/633da9a4d7d5c9baefd1730ee51bf7af54889600/elFinder.NetCore/Drivers/FileSystem/FileSystemDriver.cs%23L226"},{"type":"WEB","url":"https://snyk.io/vuln/SNYK-DOTNET-ELFINDERNETCORE-1567778"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-03-13T21:56:55.998354Z"}}