| Package | Affected versions | Patched versions |
|---|---|---|
| firefox | < 93.0 | 93.0 |
| firefox esr | < 91.2 | 91.2 |
| thunderbird | < 91.2 | 91.2 |
Through use of reportValidity() and window.open(), a plain-text validation message could have been overlaid on another origin, leading to possible user confusion and spoofing attacks. This vulnerability affects Firefox < 93, Thunderbird < 91.2, and Firefox ESR < 91.2.
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