CVE-2020-36565: Directory Traversal Vulnerability in github.com/labstack/echo/v4
Summary
CVE-2020-36565: Echo vulnerable to directory traversal. Affects github.com/labstack/echo/v4 versions < 4.2.0. Fixed in 4.2.0. How to fix ↓
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Background
github.com/labstack/echo/v4 is a Go package that provides a web framework for building HTTP servers and RESTful APIs. It offers various features such as routing, middleware, and request/response handling. However, a directory traversal vulnerability has been discovered in this package.
Vulnerability Detail
The directory traversal vulnerability in github.com/labstack/echo/v4 is a result of improper sanitization of user input on Windows. The static file handler fails to properly validate user-supplied paths, allowing an attacker to traverse directories and read files outside of the target directory that the server has permission to read. This can lead to unauthorized access to sensitive information and potential data leakage.
How To Fix
Latest published version: v4.16.1 as of 23 Oct 2026
go get github.com/labstack/echo/v4@v4.16.1Upgrading to it may include breaking changes; the version below is the minimum fixed release for this vulnerability.
If you need the minimum change
4.2.0
This is the first release that contains the fix.
go get github.com/labstack/echo/v4@v4.2.0Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There is no known workaround for this vulnerability. It is recommended to upgrade to the latest version of github.com/labstack/echo/v4 to mitigate the risk.
Conclusion
In conclusion, the directory traversal vulnerability in github.com/labstack/echo/v4 can lead to unauthorized access to sensitive files and potential data leakage. It is crucial for developers to upgrade to version 4.2.0 or later to mitigate the risk. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for github.com/labstack/echo/v4 →
FAQ
Directory traversal, also known as path traversal, is a vulnerability that allows an attacker to access files and directories outside of the intended scope. It occurs when user input is not properly validated or sanitized, allowing attackers to manipulate file paths and traverse directories.
The directory traversal vulnerability in github.com/labstack/echo/v4 can lead to unauthorized access to sensitive files and data leakage. Attackers may be able to read confidential information, such as configuration files or user data, that should not be accessible to them.
No, versions prior to 4.2.0 are affected by this vulnerability. It is recommended to upgrade to version 4.2.0 or later to mitigate the risk.
There is no known exploit available for this vulnerability at the time of this report. However, it is important to address the vulnerability promptly to prevent potential exploitation.
You can find more information about this vulnerability in the GitHub Security Advisory database. The advisory for this vulnerability can be accessed at: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/12/GHSA-j453-hm5x-c46w/GHSA-j453-hm5x-c46w.json
References
Related vulnerabilities
Recent vulnerabilities recorded for github.com/labstack/echo/v4.
