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"Cross-Origin Request Blocked"-can visitor work around this?

Discuss how to use and promote Web standards with the Mozilla Gecko engine.
postcd
 
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Joined: April 5th, 2015, 6:24 am

Post Posted November 12th, 2019, 11:31 am

If i am just a site visitor, not owner/admin, can i somehow access the site even it do not let me login due to error:

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://domain.info/sub/sessions. (Reason: CORS header ‘Access-Control-Allow-Origin’ missing).


?

Can i turn off something in Firefox?

Here is similar issue on bug tracker: https://trac.torproject.org/projects/tor/ticket/18080
Last edited by postcd on November 15th, 2019, 1:23 am, edited 1 time in total.

jscher2000

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Location: Silicon Valley, CA USA

Post Posted November 13th, 2019, 4:21 pm

What site are you talking about?

jscher2000

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Joined: December 19th, 2004, 12:26 am
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Post Posted November 14th, 2019, 9:04 am

Assuming the cross-origin communication is part of the site's design and not an attack, it's possible a setting or add-on or external filter is blocking required information. Have you tested in Firefox's Safe Mode? http://kb.mozillazine.org/Safe_mode

postcd
 
Posts: 29
Joined: April 5th, 2015, 6:24 am

Post Posted November 14th, 2019, 3:15 pm

@jscher2000 i would like to tell You but none of my Tor browsers works (alpha, stable chanels, latest release) in safe mode. It has displaying issues, hard to describe, no error, but interface can not be activated/used. May be issue of my outdated Windows. But that would be offtopic.
My Tor browsers does not have any additional non-default addons. You do not see that issue in developer console when submitting login form of the site i mentioned in the private message?

jscher2000

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Posts: 10754
Joined: December 19th, 2004, 12:26 am
Location: Silicon Valley, CA USA

Post Posted November 14th, 2019, 11:42 pm

Maybe there is some documentation on Tor browser settings related to CORS issues?

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