Svelte 1.14.1 is a minor patch release following closely after version 1.14.0, both iterations of the "magical disappearing UI framework" designed to shift work from the browser to the compile step, resulting in highly performant web applications. Looking at the provided data, the core functionality and developer experience, as indicated by the devDependencies, remain largely consistent between the two versions. Both rely on a comprehensive suite of tools including Rollup for bundling, Babel for transpilation, and ESLint for linting, ensuring a modern and robust development environment. Key dependencies like rollup-plugin-buble, rollup-plugin-node-resolve, and a variety of Babel plugins highlight the framework's commitment to ES2015+ compatibility and efficient module handling.
The primary distinction between 1.14.0 and 1.14.1 resides in their respective release dates, this suggests that version 1.14.1 likely addresses bug fixes or minor improvements discovered shortly after the release of 1.14.0. While the specific nature of these changes isn't explicitly detailed, developers considering Svelte should opt for the newer 1.14.1 to benefit from the latest refinements and increased stability. Svelte's core value proposition focuses on writing declarative code that compiles down to highly optimized vanilla JavaScript, offering a compelling alternative to traditional virtual DOM approaches and reducing runtime overhead. Therefore selecting most recent patch is crucial to reduce the amount of overhead.
All the vulnerabilities related to the version 1.14.1 of the package
Svelte vulnerable to XSS when using objects during server-side rendering
The package svelte before 3.49.0 is vulnerable to Cross-site Scripting (XSS) due to improper input sanitization and to improper escape of attributes when using objects during SSR (Server-Side Rendering). Exploiting this vulnerability is possible via objects with a custom toString() function.
Svelte has a potential mXSS vulnerability due to improper HTML escaping
A potential XSS vulnerability exists in Svelte for versions prior to 4.2.19.
Svelte improperly escapes HTML on server-side rendering. It converts strings according to the following rules:
" -> "& -> &< -> <& -> &The assumption is that attributes will always stay as such, but in some situation the final DOM tree rendered on browsers is different from what Svelte expects on server-side rendering. This may be leveraged to perform XSS attacks. More specifically, this can occur when injecting malicious content into an attribute within a <noscript> tag.
A vulnerable page (+page.svelte):
<script>
import { page } from "$app/stores"
// user input
let href = $page.url.searchParams.get("href") ?? "https://example.com";
</script>
<noscript>
<a href={href}>test</a>
</noscript>
If a user accesses the following URL,
http://localhost:4173/?href=</noscript><script>alert(123)</script>
then, alert(123) will be executed.
XSS, when using an attribute within a noscript tag