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reCAPTCHA not appearing when using Burp as a proxy

bblancoftb | Last updated: Aug 14, 2019 06:02PM UTC

When using Burpsuite Pro as a proxy the reCAPTCHA is not appearing on my client's form, and I can't submit requests. I am wondering if there is a Burp setting I need to set, or if there is a security feature in reCAPTCHA that prevents intercepting requests.

Liam, PortSwigger Agent | Last updated: Aug 15, 2019 10:46AM UTC

We haven't been able to reproduce this issue in our testing. Is the site publicly accessible?

Rajath | Last updated: Jul 21, 2020 02:09PM UTC

same case with me as well. Whenever I try to intercept aaplication with google recaptcha, recaptcha image doesn't show up. Also, I will not be able to submit forms.

Liam, PortSwigger Agent | Last updated: Jul 22, 2020 07:10AM UTC

Which browser are you using? Is the site publicly accessible?

vsegdacocacola | Last updated: Sep 16, 2020 03:48PM UTC

Have same issue.

Liam, PortSwigger Agent | Last updated: Sep 17, 2020 08:01AM UTC

Which browser are you using? Is the site publicly accessible?

Costel | Last updated: Nov 16, 2020 08:09PM UTC

Same here. Here is an example: app.gusto-demo.com Start a spider/scanner and it require to solve a captcha to login. It is not shown while using burp.

Uthman, PortSwigger Agent | Last updated: Nov 17, 2020 09:50AM UTC

Are you expecting the scanner to solve the captcha? Or is the captcha request not showing up in Flow or Logger++?

Marcos | Last updated: Nov 19, 2020 03:09PM UTC

I'm facing the same problem. I have tried to change the browser. Normally I use Firefox but I have tried 3 ones: Firefox, google chrome, opera and safari. It happens even if I just log the request. the the recapcha don't load at all. It is happen in my virtual machine using Kali. My burp is the professional one. When I have tried to proxy a page in a Windows with Firefox the problem remain. A friend using MacOS tried to proxy and everything went OK. So, I don't have any idea where the problem is.

Uthman, PortSwigger Agent | Last updated: Nov 19, 2020 03:31PM UTC

Marcos, can you please send us an email with screenshots of this? You can reach us at support@portswigger.net

Brokenstar | Last updated: Jun 23, 2021 03:19AM UTC

Same problem chromium browser cant load captcha

Uthman, PortSwigger Agent | Last updated: Jun 23, 2021 07:57AM UTC

Brokenstar, please can you send an email to support@portswigger.net with screenshots of this? If possible, include the URL too.

Daniel | Last updated: Jun 28, 2021 07:03PM UTC

Hi, I'm trying to perform some tests in a client of mine and I'm facing the same problem: Chromium (90.0.4430.212 - Developer Build), running on Debian kali-rolling (64-bit), using burp pro as proxy but the webpage cannot load recaptcha.. Any thoughts? Thanks in advance!

Uthman, PortSwigger Agent | Last updated: Jun 29, 2021 07:19AM UTC

Hi Daniel, Which version of Burp are you using? If you run the Google reCAPTCHA demo, do you see the same issue? (https://www.google.com/recaptcha/api2/demo) Is the error only occurring in the embedded browser? Do you see any errors in the Developer tools > Console in your browser?

Gavin | Last updated: Nov 03, 2022 12:54PM UTC

Hi, For anyone facing this I solved it by reinstalling the Burp SSL cert via http://burpsuite Google reCAPTCHA now loads fine for me. Hope this helps.

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