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serve-static@1.7.1 vulnerabilities

Serve static files

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Direct Vulnerabilities

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

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Vulnerability Vulnerable Version
  • L
Cross-site Scripting

serve-static is a server.

Affected versions of this package are vulnerable to Cross-site Scripting due to improper sanitization of user input in the redirect function. An attacker can manipulate the redirection process by injecting malicious code into the input.

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 serve-static to version 1.16.0, 2.1.0 or higher.

<1.16.0 >=2.0.0 <2.1.0
  • L
Open Redirect

When using serve-static middleware version < 1.7.2 and it's configured to mount at the root, it creates an open redirect on the site.

Source: Node Security Project

How to fix Open Redirect?

  • Update to version 1.7.2 or greater (or 1.6.5 if sticking to the 1.6.x line).
    • Disable redirects if not using the feature with 'redirect: false' option and cannot upgrade.

<1.6.5 >=1.7.0 <1.7.2
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