| Package | Affected versions | Patched versions |
|---|---|---|
| firefox | < 45.8.0< 52.0 | 45.8.052.0 |
| thunderbird | < 45.8.0 | 45.8.0 |
Video files loaded video captions cross-origin without checking for the presence of CORS headers permitting such cross-origin use, leading to potential information disclosure for video captions. This vulnerability affects Firefox < 52, Firefox ESR < 45.8, Thunderbird < 52, and Thunderbird < 45.8.
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