Svelte

@svelte.dev

Web development for the rest of us. See also: - community: @sveltesociety.dev - starter pack: https://bsky.app/starter-pack/did:plc:nlvjelw3dy3pddq7qoglleko/3l6ucetngs423 - feed: https://bsky.app/profile/paolo.ricciuti.me/feed/svelte-feed

We've just published patch releases of devalue, Svelte, and SvelteKit that fix a number of vulnerabilities. No need to panic — they're all hard to exploit or reliant on experimental features — but we recommend updating as soon as you get a chance. More details in the advisories:

We just released a number of security patches across the Svelte ecosystem. If you use SvelteKit, the Vercel adapter for SvelteKit, Svelte, or devalue, you should upgrade. The Vercel OSS Bug Bounty paid out over $14,000 for these reports!

You've probably heard about the supply chain attack that affected a number of widely-used npm packages today. tl;dr: Don't panic. Notes: 1. Svelte, SvelteKit and their associated packages are not vulnerable to this attack, as they do not use any of the compromised dependencies in the browser

OpenTelemetry tracing is live in SvelteKit! Huge s/o to @stracke.tech for all the help along the way. SvelteKit can now emit OTEL spans for all of its serverside constructs. It also provides an instrumentation file to easily set up trace exports. svelte.dev/blog/sveltek...

Introducing integrated observability in SvelteKit

SvelteKit apps can now emit OpenTelemetry traces and reliably set up observability instrumentation using instrumentation.server.ts

svelte.dev

We just published an advisory for CVE-2025-32388, a moderate severity XSS vulnerability in SvelteKit. Please update to `@sveltejs/kit@2.20.6`. The vulnerability affects applications that iterate over all search parameters inside a server `load` function. More details in the advisory 👇

XSS via tracked search_params

### Summary Unsanitized search param names cause XSS vulnerability. You are affected if you iterate over all entries of `event.url.searchParams` inside a server `load` function. Attackers can ex...

github.com