CVE-2022-40083: Labstack Echo Open Redirect vulnerability
Summary
CVE-2022-40083: Labstack Echo Open Redirect vulnerability. Affects github.com/labstack/echo/v4 versions < 4.9.0. Fixed in 4.9.0. How to fix ↓
Also tracked for
- golang-github-labstack-echo · Debian:12
The same CVE-2022-40083 is tracked separately for each ecosystem and vendor. Its fix information is the same; the package and affected versions differ.
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Background
Labstack Echo is a Go web framework that provides a simple and elegant way to build web applications. It offers features such as routing, middleware, and request handling. The Static Handler component in Labstack Echo version 4.8.0 is vulnerable to an open redirect attack, which can be exploited by attackers to perform Server-Side Request Forgery (SSRF) attacks. This vulnerability has a CVSS score of 9.6, indicating its critical severity.
Vulnerability Detail
The open redirect vulnerability in Labstack Echo version 4.8.0 allows attackers to manipulate the redirect URL and redirect users to arbitrary websites. This can lead to various attacks, including phishing, malware distribution, and further exploitation of the target system. The vulnerability arises from improper validation of user-supplied input in the Static Handler component. Labstack Echo version 4.9.0 includes a patch to address this issue.
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
4.9.0
This is the first release that contains the fix.
go get github.com/labstack/echo/v4@v4.9.0Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, you can manually validate and sanitize the redirect URL before passing it to the Static Handler component. Here's an example of how to perform the validation in Go:
func validateRedirectURL(url string) bool {
// Implement your validation logic here
// Return true if the URL is considered safe
// Return false if the URL is potentially malicious
}
func main() {
e := echo.New()
e.GET("/static", func(c echo.Context) error {
redirectURL := c.QueryParam("url")
if !validateRedirectURL(redirectURL) {
return c.String(http.StatusBadRequest, "Invalid redirect URL")
}
// Handle the redirect
})
e.StartServer()
}
Conclusion
Labstack Echo version 4.8.0 is vulnerable to an open redirect attack, which can lead to serious security risks. It is crucial to upgrade to version 4.9.0 or later to mitigate this vulnerability. By following the recommended steps, you can ensure the security and integrity of your web applications. For further assistance or support in vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for github.com/labstack/echo/v4 →
FAQ
Labstack Echo is a Go web framework that simplifies the development of web applications. It provides routing, middleware, and request handling capabilities.
An open redirect vulnerability allows attackers to manipulate a redirect URL and redirect users to arbitrary websites. This can be exploited for phishing attacks or to trick users into visiting malicious websites.
Server-Side Request Forgery (SSRF) is an attack where an attacker can make a server perform arbitrary requests on their behalf. In the context of this vulnerability, an attacker can abuse the open redirect to perform SSRF attacks.
This vulnerability can lead to various attacks, including phishing, malware distribution, and further exploitation of the target system. It poses a significant risk to the security and integrity of web applications using Labstack Echo version 4.8.0.
To fix the vulnerability, upgrade to Labstack Echo version 4.9.0 or later. This version includes a patch that addresses the open redirect vulnerability. Follow the provided steps in the 'how_to_fix' section for detailed instructions.
References
Related vulnerabilities
Recent vulnerabilities recorded for github.com/labstack/echo/v4.
