SecurityError: Blocked A Frame With Origin From Accessing A Cross-origin Frame

This error occurs when you are trying to access content from a frame or iframe on a different domain (origin) than the one hosting your JavaScript code. This is a security measure known as the Same-origin policy implemented by web browsers to protect against cross-site scripting attacks.

To resolve this issue, you have a few options:

  1. If you have control over both the parent page and the frame, you can ensure they have the same origin by hosting them on the same domain, subdomain, and protocol. This way, the Same-origin policy won’t be violated.

  2. If you have control over the frame’s content, you can update the frame’s response headers to allow cross-origin resource sharing (CORS) or use the postMessage API to communicate between the frame and the parent page.

  3. If you are trying to access content from a third-party website or an external service, you should check if they provide a public API or widget that allows you to access their content in a safe manner without violating the Same-origin policy.

Remember, the Same-origin policy is an important security measure, and bypassing it without proper authorization can have serious implications. So always make sure you understand and respect the security boundaries defined by the policy.

About the Author Rex

I'm a passionate tech blogger with an insatiable love for programming! From my early days tinkering with code, I've delved into web dev, mobile apps, and AI. Sharing insights and tutorials with the world is my joy, connecting me to a global community of like-minded tech enthusiasts. Python holds a special place in my heart, but I embrace all challenges. Constantly learning, I attend tech conferences, contribute to open-source projects, and engage in code review sessions. My ultimate goal is to inspire the next generation of developers and contribute positively to the ever-evolving tech landscape. Let's code together!