| Package | Affected versions | Patched versions |
|---|---|---|
| firefox | < 128.4.0< 132.0 | 128.4.0132.0 |
| thunderbird | ≥ 129.0, < 132.0< 128.4.0 | 132.0128.4.0 |
In multipart/x-mixed-replace responses, `Content-Disposition: attachment` in the response header was not respected and did not force a download, which could allow XSS attacks. This vulnerability affects Firefox < 132, Firefox ESR < 128.4, Thunderbird < 128.4, and Thunderbird < 132.
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