CSRF/XSS vulnerability through separator injection #1781

vaadin-bot opened this Issue Sep 27, 2011 · 1 comment


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Originally by @hesara

The communication protocol in Vaadin permits injection of message separators, making it possible to alter the state of other visible components (CSRF - cross site request forgery).

This can also enable XSS attacks by modifying the state of certain components.

An attack vector exploiting this would be convincing the user to paste text containing attacker written code (including special characters) to certain components in the application.

It is also possible to perform such injection through URI fragments in applications that use UriFragmentUtility.

This vulnerability was discovered by Wouter Coekaerts (http://wouter.coekaerts.be).

Imported from https://dev.vaadin.com/ issue #7669


Originally by @hesara

Fixed in [21325], reviewed by Leif and Wouter Coekaerts.

@vaadin-bot vaadin-bot closed this Sep 27, 2011
@vaadin-bot vaadin-bot added the bug label Dec 9, 2016
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