要点
- CVE-2026-27122 是影响 svelte (svelte), svelte 的中危 (CVSS 5.4)漏洞。
- 未来 30 天内被利用的概率（EPSS）：0.22%，高于 12.6% 的漏洞。
- 修复：升级到 5.51.5 或更高版本。
| Package | Affected versions | Patched versions |
|---|
| svelte | < 5.51.5
| 5.51.5
|
| svelte npm | < 5.51.5
| 5.51.5
|
Description
When using <svelte:element this={tag}> in server-side rendering, the provided tag name is not validated or sanitized before being emitted into the HTML output. If the tag string contains unexpected characters, it can result in HTML injection in the SSR output. Client-side rendering is not affected.
NVD description
svelte performance oriented web framework. Prior to 5.51.5, when using <svelte:element this={tag}> in server-side rendering, the provided tag name is not validated or sanitized before being emitted into the HTML output. If the tag string contains unexpected characters, it can result in HTML injection in the SSR output. Client-side rendering is not affected. This vulnerability is fixed in 5.51.5.
Running one of these products? Scan your site to see whether it exposes a vulnerable version.
Scan my site free