CVE-2021-23428
Directory Traversal
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
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- Low
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
Directory Traversal
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
- Record
CVE-2021-23428- CVSS 3.1
- 8.6 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L/E:F/RL:U/RC:C - Updated
- 2026-11-02
EUVDEUVD-2021-2028
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
- Record
EUVD-2021-2028- CVSS 3.1
- 8.6 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L/E:F/RL:U/RC:C - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-9rjp-r58j-fxgq
Path traversal in elFinder.NetCore
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
- Record
GHSA-9rjp-r58j-fxgq- CVSS 3.1
- 8.6 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L - Weakness
- CWE-20, CWE-22
- Updated
- 2026-11-02
NVD
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
- Record
CVE-2021-23428- CVSS 3.1
- 8.6 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L - CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-22
- Updated
- 2026-11-02
OSVGHSA-9rjp-r58j-fxgq
Path traversal in elFinder.NetCore
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
- Record
GHSA-9rjp-r58j-fxgq- CVSS 3.1
- 8.6 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L - Weakness
- CWE-20, CWE-22
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
elFinder.NetCoreNuGet |
through 1.3.5 | None known |
elFinder.NetCoreNuGet |
through 1.3.5, plus listed versions 1.0.01.0.11.0.21.0.31.0.4 Show 13 moreShow less1.0.51.0.61.0.71.0.81.0.91.1.01.2.11.2.21.3.01.3.11.3.21.3.31.3.4 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-23428 is a high vulnerability (CVSS 8.6) in Elfinder.netcore Project Elfinder.netcore, published September 1, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.67%, the 76th percentile. No source names a fixed version.
References
snyk.io/vuln/SNYK-DOTNET-ELFINDERNETCORE-1313838
github.com/gordon-matt/elFinder.NetCore
nvd.nist.gov/vuln/detail/CVE-2021-23428