Svelte version 1.6.7 is a minor update to the "magical disappearing UI framework," following closely on the heels of version 1.6.6. Both versions share the same core dependencies, including magic-string for efficient string manipulation, crucial for Svelte's compile-time transformations. The developer toolchain remains consistent, with a suite of familiar tools like rollup for bundling, eslint for code quality, mocha for testing, and nyc for code coverage. This ensures a stable and reliable development experience for Svelte users.
From a developer's perspective, the upgrade from 1.6.6 to 1.6.7 is likely a bug fix or minor enhancement release. The identical dependency and devDependency lists suggest no major feature additions or breaking changes. Developers can likely upgrade with minimal risk and expect continued compatibility with their existing Svelte components and applications. Keeping an eye on the Svelte changelog or release notes is always recommended to understand the specific nuances of each update. The consistent use of respected libraries underlines the project's commitment to quality and best practices, making Svelte a dependable choice for building performant and maintainable web applications. Both versions provide a solid foundation for developers seeking a component-based approach to web development that prioritizes speed and efficiency.
All the vulnerabilities related to the version 1.6.7 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