| Package | Affected versions | Patched versions |
|---|---|---|
| firefox | < 128.12.0< 140.0 | 128.12.0140.0 |
When a file download is specified via the `Content-Disposition` header, that directive would be ignored if the file was included via a `<embed>` or `<object>` tag, potentially making a website vulnerable to a cross-site scripting attack. This vulnerability was fixed in Firefox 140, Firefox ESR 128.12, Thunderbird 140, and Thunderbird 128.12.
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