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CVE-2021-23427 — Imporoper path validation in elFinder.NetCore —...

CRITICAL

Imporoper path validation in elFinder.NetCore

Published September 2, 2021Updated March 13, 2026Source: osv

Summary

This affects all versions of package elFinder.NetCore. The ExtractAsync function within the FileSystem is vulnerable to arbitrary extraction due to insufficient validation.

Advisory Timeline

  • First published September 2, 2021 (1866 days ago).
  • Last revised March 13, 2026 — 1653 days after initial publication.

Affected Packages (1)

Affects 1 ecosystem: nuget (1).

PackageEcosystemAffectedFixed In
elFinder.NetCore
nuget
1.0.0, 1.0.1, 1.0.2, 1.0.3 (+15 more)Range-based data available

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

  • CWE-20
    Improper Input ValidationMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.8 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Frequently Asked Questions

What is CVE-2021-23427?
Imporoper path validation in elFinder.NetCore This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.8/10).
How do I check if my project is affected by CVE-2021-23427?
CVE-2021-23427 affects elFinder.NetCore. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2021-23427 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
9.8

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-wmpm-fq7r-jq56

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