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express@5.0.0-beta.3 vulnerabilities

Fast, unopinionated, minimalist web framework

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Direct Vulnerabilities

Known vulnerabilities in the express package. This does not include vulnerabilities belonging to this package’s dependencies.

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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:

  1. The attacker should be able to control the input to response.redirect()

  2. express must not redirect before the template appears

  3. the browser must not complete redirection before:

  4. 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
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