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How to implement strict Content Security Policy

Joonie_K
Shopify Partner
2 0 1
‎12-22-2022 05:35 PM

After running our site through pagespeed.web.dev,
I'd like to know how to solve the following issue:

Ensure CSP is effective against XSS attacks. A strong Content Security Policy (CSP) significantly reduces the risk of cross-site scripting (XSS) attacks.
1- script-src directive is missing. This can allow the execution of unsafe scripts.
2-Missing object-src allows the injection of plugins that execute unsafe scripts. Consider setting object-src to 'none' if you can.

 

Anyone has experience with this ?

I'm using Expanse theme.
Thanks in advance !

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Replies 3 (3)
SaaSEnthu
Shopify Partner
426 58 102
‎12-30-2022 12:39 AM

To ensure that your Content Security Policy (CSP) is effective against cross-site scripting (XSS) attacks, you will need to add the script-src and object-src directives to your CSP.

Here's how you can do this:

 

  1. Edit your theme's theme.liquid file to add the CSP headers:

 

<head>
  <!-- Other head content -->
  <meta http-equiv="Content-Security-Policy" content="default-src 'self'; script-src 'self' 'unsafe-inline'; object-src 'none';">
</head>
​

 

  • Replace 'self' and 'unsafe-inline' with the appropriate values for your store. You can find more information about the different values you can use in the Content Security Policy documentation.

  • Save your changes and publish your theme to apply the CSP headers to your store.

 

By adding the script-src and object-src directives to your CSP, you can help protect your store against XSS attacks and improve the security of your site.

 

I hope this helps! Let me know if you have any further questions.

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In response to SaaSEnthu
arnab1
Shopify Partner
24 0 2
‎07-24-2023 05:15 AM

Hi SaaSEnthu,

 

Can you tell me how to get 'self' and 'unsafe-inline'  value from my shopify store?

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In response to arnab1
Retolize
Visitor
1 0 0
‎08-22-2023 11:10 AM

Apparently not, I find people love to "half" help on here but are never able to sort out a problem 😄

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