| Package | Affected versions | Patched versions |
|---|---|---|
| firefox | < 52.0. | 52.0. |
| thunderbird | < 52.0. | 52.0. |
A malicious site could spoof the contents of the print preview window if popup windows are enabled, resulting in user confusion of what site is currently loaded. This vulnerability affects Firefox < 52 and Thunderbird < 52.
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