When reusing existing popups Firefox would have allowed them to cover the fullscreen notification UI, which could have enabled browser spoofing attacks. This vulnerability affects Thunderbird < 91.9, Firefox ESR < 91.9, and Firefox < 100.
2022-12-22T20:15:26.397
2025-04-15T20:15:36.377
Modified
CVSSv3.1: 6.5 (MEDIUM)
Type | Vendor | Product | Version/Range | Vulnerable? |
---|---|---|---|---|
Application | mozilla | firefox | < 100.0 | Yes |
Application | mozilla | firefox_esr | < 91.9 | Yes |
Application | mozilla | thunderbird | < 91.9 | Yes |