| Package | Affected versions | Patched versions |
|---|---|---|
| firefox | < 52.1.0< 53.0 | 52.1.053.0 |
| thunderbird | < 52.1.0 | 52.1.0 |
If a page is loaded from an original site through a hyperlink and contains a redirect to a "data:text/html" URL, triggering a reload will run the reloaded "data:text/html" page with its origin set incorrectly. This allows for a cross-site scripting (XSS) attack. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 52.1, and Firefox < 53.
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