Not rated
CVE-2020-26956 In some cases, removing HTML elements during sanitization would keep existing SVG event handlers and therefore lead to…
Description
In some cases, removing HTML elements during sanitization would keep existing SVG event handlers and therefore lead to XSS. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Firefox 83 | earliest → < 83 | 83 |
| Firefox ESR 78.5 | earliest → < 78.5 | 78.5 |
| Thunderbird 78.5 | earliest → < 78.5 | 78.5 |
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