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Summary: Sending CSRF token in GET forms is dangerous because if there are external links on the target page then the token could leak through Referer header. The token is not required for anything because GET forms are used only to display data, not to perform operations. Sending CSRF tokens to external URLs leaks the token immediately. Please note that <form action> defaults to GET. PhabricatorUserOAuthSettingsPanelController suffered from this problem for both reasons. Test Plan: Save my settings (POST form). Reviewers: epriestley Reviewed By: epriestley CC: aran, epriestley Differential Revision: https://secure.phabricator.com/D1558
Phabricator is a open source collection of web applications which make it easier to write, review, and share source code. Phabricator was developed at Facebook. This is an early release. It's pretty high-quality and usable, but under active development so things may change quickly. You can learn more about the project and find links to documentation and resources at: http://phabricator.org/ LICENSE Phabricator is released under the Apache 2.0 license except as otherwise noted. http://www.apache.org/licenses/LICENSE-2.0