要点
- CVE-2026-27125 是影响 svelte (svelte), svelte 的中危 (CVSS 6.8)漏洞。
- 未来 30 天内被利用的概率（EPSS）：0.43%，高于 37.7% 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
In server-side rendering, attribute spreading on elements (e.g. <div {...attrs}>) enumerates inherited properties from the object's prototype chain rather than only own properties. In environments where Object.prototype has already been polluted — a precondition outside of Svelte's control — this can cause unexpected attributes to appear in SSR output or cause SSR to throw errors. Client-side rendering is not affected.
NVD description
svelte performance oriented web framework. Prior to 5.51.5, in server-side rendering, attribute spreading on elements (e.g. <div {...attrs}>) enumerates inherited properties from the object's prototype chain rather than only own properties. In environments where Object.prototype has already been polluted — a precondition outside of Svelte's control — this can cause unexpected attributes to appear in SSR output or cause SSR to throw errors. 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