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CVE-2021-43538 By misusing a race in our notification code, an attacker could have forcefully hidden the notification for pages that…
Description
By misusing a race in our notification code, an attacker could have forcefully hidden the notification for pages that had received full screen and pointer lock access, which could have been used for spoofing attacks. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Thunderbird 91.4 | earliest → < 91.4.0 | 91.4.0 |
| Firefox ESR 91.4 | earliest → < 91.4.0 | 91.4.0 |
| Firefox 95 | earliest → < 95 | 95 |
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