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chore(deps): update dependency @sveltejs/kit to v2.20.6 [security]#403

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chore(deps): update dependency @sveltejs/kit to v2.20.6 [security]#403
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renovate/npm-sveltejs-kit-vulnerability

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@renovate renovate bot commented Apr 14, 2025 •
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This PR contains the following updates:

Package Change Age Confidence
@sveltejs/kit (source) 2.5.18 → 2.20.6 age confidence

GitHub Vulnerability Alerts

CVE-2025-32388

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 exploit it by crafting a malicious URL and getting a user to click a link with said URL.

Details

SvelteKit tracks which parameters in event.url.searchParams are read inside server load functions. If the application iterates over the these parameters, the uses.search_params array included in the boot script (embedded in the server-rendered HTML) will have any search param name included in unsanitized form.

packages/kit/src/runtime/server/utils.js:150 has the stringify_uses(node) function which prints these out.

Reproduction

In a +page.server.js or +layout.server.js:

/** @​type {import('@​sveltejs/kit').Load} */
export function load(event) {
  const values = {};

  for (const key of event.url.searchParams.keys()) {
    values[key] = event.url.searchParams.get(key);
  }
}

If a user visits the page in question via a link containing ?</script/><script>window.pwned%3D1</script/>, the </script> will be included verbatim in the payload, causing the embedded script to be executed.

It is not necessary to return the parameter value from load or render it in the page, only to read it (which causes it to be tracked as a dependency) while load is running.

Impact

Any application that iterates over all values in event.url.searchParams in a load function in +page.server.js or +layout.server.js (directly or indirectly) is vulnerable to XSS.

Release Notes

sveltejs/kit (@​sveltejs/kit)

v2.20.6

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Patch Changes

v2.20.5

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Patch Changes

  • allow HandleServerError hook to access getRequestEvent (#​13666)

  • fix: prevent Rollup warnings for undefined hooks (#​13687)

v2.20.4

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Patch Changes
  • chore: remove internal class-replacement hack that isn't needed anymore (#​13664)

v2.20.3

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Patch Changes
  • fix: only call afterNavigate once on app start when SSR is disabled (#​13593)

v2.20.2

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Patch Changes
  • fix: allow non-prerendered API endpoint calls during reroute when prerendering (#​13616)

v2.20.1

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Patch Changes
  • fix: avoid using top-level await (#​13607)

v2.20.0

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Minor Changes
  • feat: add getRequestEvent to $app/server (#​13582)

v2.19.2

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Patch Changes
  • fix: lazily load CSS for dynamically imported components (#​13564)

v2.19.1

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Patch Changes
  • fix: allow reroute to point to prerendered route (#​13575)

v2.19.0

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Minor Changes
Patch Changes

v2.18.0

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Minor Changes
Patch Changes

  • fix: correct navigation history with hash router and ensure load functions are rerun on user changes to URL hash (#​13492)

  • fix: include universal load assets as server assets (#​13531)

  • fix: Include root layout and error nodes even when apps have only prerendered pages (#​13522)

  • fix: correctly preload data on mousedown/touchstart if code was preloaded on hover (#​13530)

v2.17.3

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Patch Changes

  • fix: avoid simulated CORS errors with non-HTTP URLs (#​13493)

  • fix: correctly preload links on mousedown/touchstart (#​13486)

  • fix: load CSS when using server-side route resolution (#​13498)

  • fix: correctly find shared entry-point CSS files during inlining (#​13431)

v2.17.2

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Patch Changes

  • fix: add promise return type to the enhance action callback (#​13420)

  • fix: change server-side route resolution endpoint (#​13461)

v2.17.1

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Patch Changes
  • fix: make route resolution imports root-relative if paths.relative option is false (#​13412)

v2.17.0

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Minor Changes

  • feat: validate values for cache-control and content-type headers in dev mode (#​13114)

  • feat: support server-side route resolution (#​13379)

Patch Changes

  • chore: don't error during development when using use:enhance with +server as some third party libraries make it possible to POST forms to it (#​13397)

  • fix: skip hooks for server fetch to prerendered routes (#​13377)

  • fix: ignore non-entry-point CSS files during inlining (#​13395)

  • fix: default server fetch to use prerendered paths (#​13377)

v2.16.1

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Patch Changes

  • fix: avoid overwriting headers for sub-requests made while loading the error page (#​13341)

  • fix: correctly resolve index file entrypoints such as src/service-worker/index.js (#​13354)

  • fix: correctly handle relative anchors when using the hash router (#​13356)

v2.16.0

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Minor Changes

  • feat: add ability to invalidate a custom identifier on goto() (#​13256)

  • feat: remove the postinstall script to support pnpm 10 (#​13304)

    NOTE: users should add "prepare": "svelte-kit sync" to their package.json in order to avoid the following warning upon first running Vite:

    ▲ [WARNING] Cannot find base config file "./.svelte-kit/tsconfig.json" [tsconfig.json]

    tsconfig.json:2:12:
      2 │   "extends": "./.svelte-kit/tsconfig.json",
        ╵              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

  • feat: provide PageProps and LayoutProps types (#​13308)

Patch Changes

  • perf: shorten chunk file names (#​13003)

  • fix: strip internal data before passing URL to reroute (#​13092)

  • fix: support absolute URLs and reroutes with data-sveltekit-preload-code="viewport" (#​12217)

  • fix: use current window.fetch for server load fetch requests (#​13315)

  • fix: resolve symlinks when handling routes (#​12740)

  • fix: prevent infinite reload when using the hash router and previewing /index.html (#​13296)

  • fix: service worker base path in dev mode (#​12577)

  • chore: error during development when using use:enhance with +server (#​13197)

  • chore: add most common status codes to redirect() JS documentation (#​13301)

  • fix: correctly link to assets inlined by the inlineStyleThreshold option (#​13068)

  • fix: fall back to importing dynamic dependencies relative to SvelteKit package (#​12532)

  • fix: use arrow function types over bound funcs (#​12955)

  • fix: correctly navigate when hash router is enabled and the browser encodes extra hashes (#​13321)

v2.15.3

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Patch Changes

  • fix: fix race-condition when not using SSR when pressing back before initial load (#​12925)

  • fix: remove ":$" from virtual module ids to allow dev server to work with proxies (#​12157)

  • fix: upgrade esm-env to remove warning when NODE_ENV is not set (#​13291)

  • fix: handle Redirect thrown from root layout load function when client-side navigating to a non-existent page (#​12005)

  • fix: make param matchers generated type import end with .js (#​13286)

v2.15.2

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Patch Changes

  • fix: correctly notify page store subscribers (#​13205)

  • fix: prerender data when there is no server load but the trailingSlash option is set from the server (#​13262)

  • fix: correctly remove navigation callbacks when returning function in onNavigate (#​13241)

v2.15.1

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Patch Changes

  • fix: add CSP hashes/nonces to inline styles when using bundleStrategy: 'inline' (#​13232)

  • fix: silence dev/prod warning during sync (#​13244)

v2.15.0

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Minor Changes
  • feat: add bundleStrategy: 'inline' option (#​13193)

v2.14.1

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Patch Changes
  • fix: do not mutate URL during reroute logic (#​13222)

v2.14.0

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Minor Changes
  • feat: add hash-based routing option (#​13191)
Patch Changes
  • fix: create new URL when calling goto(...), to handle case where URL is mutated (#​13196)

v2.13.0

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Minor Changes
  • feat: add bundleStrategy: 'split' | 'single' option (#​13173)

v2.12.2

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Patch Changes

  • fix: correctly resolve no hooks file when a similarly named directory exists (#​13188)

  • fix: correctly resolve $app/state on the server with Vite 5 (#​13192)

v2.12.1

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Patch Changes
  • fix: replace navigating.current.<x> with navigating.<x> (#​13174)

v2.12.0

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Minor Changes
Patch Changes
  • chore: specify the route ID in the error message during development when making a form action request to a route without form actions (#​13167)

v2.11.1

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Patch Changes
  • fix: adhere to Vite build.minify setting when building the service worker (#​13143)

v2.11.0

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Minor Changes
  • feat: transport custom types across the server/client boundary (#​13149)
Patch Changes
  • fix: correctly resolve hooks file when a similarly named directory exists (#​13144)

v2.10.1

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Patch Changes
  • fix: export init hook from get_hooks (#​13136)

v2.10.0

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Minor Changes
  • feat: server and client init hook (#​13103)
Patch Changes
  • fix: prevent hooks exported from hooks.js from overwriting hooks from hooks.server.js (#​13104)

v2.9.1

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Patch Changes
  • fix: correctly match route groups preceding optional parameters (#​13099)

v2.9.0

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Minor Changes
Patch Changes
  • fix: transform link[rel='shortcut icon'] and link[rel='apple-touch-icon'] to be absolute to avoid console error when navigating (#​13077)

v2.8.5

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Patch Changes
  • fix: don't hydrate when falling back to error page (#​13056)

v2.8.4

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Patch Changes
  • fix: update inline css url generation for FOUC prevention in dev (#​13007)

v2.8.3

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Patch Changes

  • fix: ensure error messages are escaped (#​13050)

  • fix: escape values included in dev 404 page (#​13039)

v2.8.2

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Patch Changes

  • fix: prevent duplicate fetch request when using Request with load function's fetch (#​13023)

  • fix: do not override default cookie decoder to allow users to override the cookie library version (#​13037)

v2.8.1

Compare Source

Patch Changes

  • fix: only add nonce to script-src-elem, style-src-attr and style-src-elem CSP directives when unsafe-inline is not present (#​11613)

  • fix: support HTTP/2 in dev and production. Revert the changes from #​12907 to downgrade HTTP/2 to TLS as now being unnecessary (#​12989)

v2.8.0

Compare Source

Minor Changes
  • feat: add helper to identify ActionFailure objects (#​12878)

v2.7.7

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Patch Changes

v2.7.6

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Patch Changes
  • fix: update broken links in JSDoc (#​12960)

v2.7.5

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Patch Changes

  • fix: warn on invalid cookie name characters (#​12806)

  • fix: when using @vitejs/plugin-basic-ssl, set a no-op proxy config to downgrade from HTTP/2 to TLS since undici does not yet enable HTTP/2 by default (#​12907)

v2.7.4

Compare Source

Patch Changes

  • fix: ensure element is focused after subsequent clicks of the same hash link (#​12866)

  • fix: avoid preload if event default was prevented for touchstart and mousedown events (#​12887)

  • fix: avoid reloading behaviour for hash links with data-sveltekit-reload if the hash is on the same page (#​12866)

v2.7.3

Compare Source

Patch Changes

  • fix: include importer in illegal import error message (#​12820)

  • fix: don't try reading assets directly that aren't present (#​12876)

  • fix: decode non-latin characters when previewing prerendered pages (#​12874)

  • fix: better error message when a Result is returned from a form action (#​12829)

  • docs: update URLs for new svelte.dev site (#​12857)

v2.7.2

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Patch Changes
  • fix: use absolute links in JSDoc comments (#​12718)

v2.7.1

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Patch Changes

  • chore: upgrade to sirv 3.0 (#​12796)

  • fix: warn when form action responses are lost because SSR is off (#​12063)

v2.7.0

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Minor Changes
  • feat: update service worker when new version is detected (#​12448)
Patch Changes

  • fix: correctly handle relative paths when fetching assets on the server (#​12113)

  • fix: decode non ASCII anchor hashes when scrolling into view (#​12699)

  • fix: page response missing CSP and Link headers when return promise in load (#​12418)

v2.6.4

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Patch Changes

  • fix: only preload links that have a different URL than the current page (#​12773)

  • fix: revert change to replace version in generateBundle (#​12779)

  • fix: catch stack trace fixing errors thrown in web containers (#​12775)

  • fix: use absolute links in JSDoc comments (#​12772)

v2.6.3

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Patch Changes

  • fix: ensure a changing version doesn't affect the hashes for chunks without any actual code changes (#​12700)

  • fix: prevent crash when logging URL search params in a server load function (#​12763)

  • chore: revert update dependency cookie to ^0.7.0 (#​12767)

v2.6.2

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Patch Changes
  • chore(deps): update dependency cookie to ^0.7.0 (#​12746)

v2.6.1

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Patch Changes
  • fix: better error message when calling push/replaceState before router is initialized (#​11968)

v2.6.0

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Minor Changes
  • feat: support typed arrays in load functions (#​12716)
Patch Changes
  • fix: open a new tab for <form target="_blank"> and ` submissions (#​11936)

v2.5.28

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Patch Changes
  • fix: import node:process instead of using globals (#​12641)

v2.5.27

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Patch Changes

  • fix: asynchronously instantiate components when using Svelte 5 (#​12613)

  • fix: use {@&#8203;render ...} tag when generating default fallback page for svelte 5 apps (#​12653)

  • fix: emulate event.platform even when the route does not exist (#​12513)

v2.5.26

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Patch Changes
  • fix: exclude service worker directory from tsconfig (#​12196)

v2.5.25

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Patch Changes

v2.5.24

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Patch Changes

v2.5.23

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Patch Changes
  • fix: use dynamic components in root.svelte instead of svelte:component for svelte 5 (#​12584)

v2.5.22

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Patch Changes
  • chore: configure provenance in a simpler manner (#​12570)

v2.5.21

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Patch Changes

v2.5.20

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Patch Changes
  • fix: set revalidate cache header on 404'd static assets (#​12530)

v2.5.19

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Patch Changes
  • fix: Svelte 5 - ignore binding_non_reactive warning in generated root component (you also need to update to svelte@5.0.0-next.204) (#​12524)

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@renovate renovate bot requested a review from bartvdbraak April 14, 2025 21:56
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Quality Gate Passed Quality Gate passed

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0.0% Duplication on New Code

See analysis details on SonarQube Cloud

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@renovate renovate bot changed the title chore(deps): update dependency @sveltejs/kit to v2.20.6 [security] chore(deps): update dependency @sveltejs/kit to v2.20.6 [security] - autoclosed Feb 2, 2026
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@renovate renovate bot changed the title chore(deps): update dependency @sveltejs/kit to v2.20.6 [security] - autoclosed chore(deps): update dependency @sveltejs/kit to v2.20.6 [security] Feb 2, 2026
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Quality Gate Passed Quality Gate passed

Issues
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0 Accepted issues

Measures
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0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

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