| Package | Affected versions | Patched versions |
|---|---|---|
| firefox | ≥ 91.0, < 91.1< 92.0 | 91.192.0 |
| firefox esr | < 78.14 | 78.14 |
| thunderbird | ≥ 91.0, < 91.1< 78.14 | 91.178.14 |
When delegating navigations to the operating system, Firefox would accept the `mk` scheme which might allow attackers to launch pages and execute scripts in Internet Explorer in unprivileged mode. *This bug only affects Firefox for Windows. Other operating systems are unaffected.*. This vulnerability affects Firefox < 92, Thunderbird < 91.1, Thunderbird < 78.14, Firefox ESR < 78.14, and Firefox ESR < 91.1.
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