Vulnerability	Vulnerable Version
M Cross-site Scripting express is a minimalist web framework. Affected versions of this package are vulnerable to Cross-site Scripting due to improper handling of user input in the `response.redirect` method. An attacker can execute arbitrary code by passing malicious input to this method. Note To exploit this vulnerability, the following conditions are required: The attacker should be able to control the input to `response.redirect()` express must not redirect before the template appears the browser must not complete redirection before: the user must click on the link in the template How to fix Cross-site Scripting? Upgrade `express` to version 4.20.0, 5.0.0 or higher.	<4.20.0>=5.0.0-alpha.1 <5.0.0
M Open Redirect express is a minimalist web framework. Affected versions of this package are vulnerable to Open Redirect due to the implementation of URL encoding using `encodeurl` before passing it to the `location` header. This can lead to unexpected evaluations of malformed URLs by common redirect allow list implementations in applications, allowing an attacker to bypass a properly implemented allow list and redirect users to malicious sites. How to fix Open Redirect? Upgrade `express` to version 4.19.2, 5.0.0-beta.3 or higher.	<4.19.2>=5.0.0-alpha.1 <5.0.0-beta.3

Cross-site Scripting

express is a minimalist web framework.

Affected versions of this package are vulnerable to Cross-site Scripting due to improper handling of user input in the response.redirect method. An attacker can execute arbitrary code by passing malicious input to this method.

Note

To exploit this vulnerability, the following conditions are required:

The attacker should be able to control the input to response.redirect()
express must not redirect before the template appears
the browser must not complete redirection before:
the user must click on the link in the template

How to fix Cross-site Scripting?

Upgrade express to version 4.20.0, 5.0.0 or higher.

<4.20.0>=5.0.0-alpha.1 <5.0.0

Open Redirect

express is a minimalist web framework.

Affected versions of this package are vulnerable to Open Redirect due to the implementation of URL encoding using encodeurl before passing it to the location header. This can lead to unexpected evaluations of malformed URLs by common redirect allow list implementations in applications, allowing an attacker to bypass a properly implemented allow list and redirect users to malicious sites.

How to fix Open Redirect?

Upgrade express to version 4.19.2, 5.0.0-beta.3 or higher.

<4.19.2>=5.0.0-alpha.1 <5.0.0-beta.3

Go back to all versions of this package