{"id":"CVE-2021-23428","aliases":[],"url":"https://o3.security/vulnerability/CVE-2021-23428","summary":"Path traversal in elFinder.NetCore","details":"This affects all versions of package elFinder.NetCore. The Path.Combine(...) method is used to create an absolute file path. Due to missing sanitation of the user input and a missing check of the generated path its possible to escape the Files directory via path traversal","published":"2021-09-02T22:05:26Z","modified":"2026-03-13T22:11:17.814091Z","cvss":{"score":8.6,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L"},"epss":{"score":0.0167,"percentile":0.75653,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"NuGet","name":"elFinder.NetCore","fixedVersion":null}],"fix":null,"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-23428"},{"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#L387"},{"type":"WEB","url":"https://github.com/gordon-matt/elFinder.NetCore/blob/633da9a4d7d5c9baefd1730ee51bf7af54889600/elFinder.NetCore/Drivers/FileSystem/FileSystemDriver.cs%23L387"},{"type":"WEB","url":"https://snyk.io/vuln/SNYK-DOTNET-ELFINDERNETCORE-1313838"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-03-13T22:11:17.814091Z"}}