| Package | Affected versions | Patched versions |
|---|---|---|
| firefox | < 101 | 101 |
| firefox esr | < 91.10 | 91.10 |
| thunderbird | < 91.10 | 91.10 |
A malicious website could have learned the size of a cross-origin resource that supported Range requests. This vulnerability affects Thunderbird < 91.10, Firefox < 101, and Firefox ESR < 91.10.
Running one of these products? Scan your site to see whether it exposes a vulnerable version.
Scan my site free