| Package | Affected versions | Patched versions |
|---|---|---|
| firefox | < 52.5.0< 57.0 | 52.5.057.0 |
| thunderbird | < 52.5.0 | 52.5.0 |
The Resource Timing API incorrectly revealed navigations in cross-origin iframes. This is a same-origin policy violation and could allow for data theft of URLs loaded by users. This vulnerability affects Firefox < 57, Firefox ESR < 52.5, and Thunderbird < 52.5.
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