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CVE-2021-23428

Directory Traversal

CRITICAL
9.8
CVSS Score
Published: September 1, 2021 at 02:30 PM UTC
Updated: June 17, 2026 at 03:38 AM UTC
1 product affected across 1 vendorElfinder.netcore

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Severity
CRITICAL9.8
Exploit prediction
EPSS 2%

Description

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (3)

x_refsource_MISCProductThird Party Advisory
Source: [email protected]
https://github.com/gordon-matt/elFinder.NetCore
x_refsource_MISCBroken Link
Source: [email protected]
https://github.com/gordon-matt/elFinder.NetCore/blob/633da9a4d7d5c9baefd1730ee51bf7af54889600/elFinder.NetCore/Drivers/FileSystem/FileSystemDriver.cs%23L387
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://snyk.io/vuln/SNYK-DOTNET-ELFINDERNETCORE-1313838

CVSS

9.8CRITICAL[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-22

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