| Package | Affected versions | Patched versions |
|---|---|---|
| firefox | < 85.0 | 85.0 |
| firefox esr | < 78.7 | 78.7 |
| thunderbird | < 78.7 | 78.7 |
Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison, and a potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.
Running one of these products? Scan your site to see whether it exposes a vulnerable version.
Scan my site free