Despite adding a content security policy within the meta tag of my HTML, the policy does not seem to be properly enforced

I have implemented the Content Security Policy within the HTML meta tag

    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <meta http-equiv="Content-Security-Policy"  content="frame-src http://localhost:35637/" /> >
        <title>User Input</title>

However, when I run the code and check the developer tools, I encounter the following message:

Refused to frame 'http://localhost:35637/' because it violates the following Content Security Policy directive: "frame-src 'self'".

I am puzzled as to why it is not recognizing the "frame-src http://localhost:35637/" directive but instead showing "frame-src 'self' "

htmlcontent-security-policy

Answer №1

It is probable that the reason for this issue is due to a Content-Security-Policy being implemented with the directive "frame-src 'self'" on your webpage. This is likely set as a response header. By adding another policy, you are essentially making the overall enforced policy more stringent. To resolve this, you must determine how the current policy is configured and make necessary adjustments or deletions.

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