| Package | Affected versions | Patched versions |
|---|---|---|
| firefox | < 127.0 | 127.0 |
| firefox esr | < 115.12 | 115.12 |
| thunderbird | < 115.12 | 115.12 |
By monitoring the time certain operations take, an attacker could have guessed which external protocol handlers were functional on a user's system. This vulnerability affects Firefox < 127, Firefox ESR < 115.12, and Thunderbird < 115.12.
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