| Package | Affected versions | Patched versions |
|---|---|---|
| firefox | < 101.0 | 101.0 |
| firefox esr | < 91.11 | 91.11 |
| thunderbird | < 91.11 | 91.11 |
An attacker could have injected CSS into stylesheets accessible via internal URIs, such as resource:, and in doing so bypass a page's Content Security Policy. This vulnerability affects Firefox ESR < 91.11, Thunderbird < 102, Thunderbird < 91.11, and Firefox < 101.
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