5.4
Medium
CVE-2026-0890 Spoofing issue in the DOM: Copy & Paste and Drag & Drop component
Description
Spoofing issue in the DOM: Copy & Paste and Drag & Drop component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Firefox 147 | earliest → < 147 | 147 |
| Firefox 140.7 | earliest → < 140.7 | 140.7 |
| Firefox ESR 140.7 | earliest → < 140.7 | 140.7 |
| Thunderbird 147 | earliest → < 147 | 147 |
| Thunderbird 140.7 | earliest → < 140.7 | 140.7 |
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