7.5
High
CVE-2022-26387 When installing an add-on, Firefox verified the signature before prompting the user; but while the user was confirming…
Description
When installing an add-on, Firefox verified the signature before prompting the user; but while the user was confirming the prompt, the underlying add-on file could have been modified and Firefox would not have noticed. This vulnerability affects Firefox < 98, Firefox ESR < 91.7, and Thunderbird < 91.7.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Firefox 98 | earliest → < 98 | 98 |
| Firefox ESR 91.7 | earliest → < 91.7 | 91.7 |
| Thunderbird 91.7 | earliest → < 91.7 | 91.7 |
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