CVE-2026-27901
Medium
Description
Svelte performance oriented web framework. Prior to version 5.53.5, the contents of `bind:innerText` and `bind:textContent` on `contenteditable` elements were not properly escaped. This could enable HTML injection and Cross-Site Scripting (XSS) if rendering untrusted data as the binding's initial value on the server. Version 5.53.5 fixes the issue.
SeverityMedium
CVSS6.1
Exploit probability—
Product
Svelte
PublishedFeb 26, 2026
First seenFeb 26, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- svelte svelte5.53.5 or later
- svelte5.53.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| svelte svelte | v < 5.53.5, 5.53.5 | 5.53.5 |
| sveltenpm | v < 5.53.5 | 5.53.5 |
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