Report error

If you have found a possible security vulnerability on Yandex, please use this form to report it to us. The issue you are about to report should have the potential to violate the confidentiality, integrity, or availability of sensitive user data stored on a Yandex website or application. Examples of security vulnerabilities we are interested in include, but are not limited to:

  • Cross Site Scripting (XSS);
  • Cross Site Request Forgery (CSRF);
  • Injections;
  • Broken Authentication and Session Management.

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