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chore(deps): update dependency svelte to v4.2.19 [security] #107

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@renovate renovate bot commented Aug 30, 2024

This PR contains the following updates:

Package Change Age Adoption Passing Confidence
svelte (source) 4.2.7 -> 4.2.19 age adoption passing confidence

GitHub Vulnerability Alerts

CVE-2024-45047

Summary

A potential XSS vulnerability exists in Svelte for versions prior to 4.2.19.

Details

Svelte improperly escapes HTML on server-side rendering. It converts strings according to the following rules:

  • If the string is an attribute value:
    • " -> "
    • & -> &
    • Other characters -> No conversion
  • Otherwise:
    • < -> &lt;
    • & -> &amp;
    • Other characters -> No conversion

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.

PoC

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.

Impact

XSS, when using an attribute within a noscript tag


Release Notes

sveltejs/svelte (svelte)

v4.2.19

Compare Source

Patch Changes
  • fix: ensure typings for <svelte:options> are picked up (#​12902)

  • fix: escape < in attribute strings (#​12989)

v4.2.18

Compare Source

Patch Changes

v4.2.17

Compare Source

Patch Changes
  • fix: correctly handle falsy values of style directives in SSR mode (#​11584)

v4.2.16

Compare Source

Patch Changes
  • fix: check if svelte component exists on custom element destroy (#​11489)

v4.2.15

Compare Source

Patch Changes
  • support attribute selector inside :global() (#​11135)

v4.2.14

Compare Source

Patch Changes
  • fix parsing camelcase container query name (#​11131)

v4.2.13

Compare Source

Patch Changes
  • fix: applying :global for +,~ sibling combinator when slots are present (#​9282)

v4.2.12

Compare Source

Patch Changes
  • fix: properly update svelte:component props when there are spread props (#​10604)

v4.2.11

Compare Source

Patch Changes
  • fix: check that component wasn't instantiated in connectedCallback (#​10466)

v4.2.10

Compare Source

Patch Changes
  • fix: add scrollend event type (#​10336)

  • fix: add fetchpriority attribute type (#​10390)

  • fix: Add miter-clip and arcs to stroke-linejoin attribute (#​10377)

  • fix: make inline doc links valid (#​10366)

v4.2.9

Compare Source

Patch Changes
  • fix: add types for popover attributes and events (#​10042)

  • fix: add gamepadconnected and gamepaddisconnected events (#​9864)

  • fix: make @types/estree a dependency (#​10149)

  • fix: bump axobject-query (#​10167)

v4.2.8

Compare Source

Patch Changes
  • fix: port over props that were set prior to initialization (#​9701)

Configuration

📅 Schedule: Branch creation - "" (UTC), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.


  • If you want to rebase/retry this PR, check this box

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@renovate renovate bot force-pushed the renovate/npm-svelte-vulnerability branch from c5d0c6b to 6e486c4 Compare January 23, 2025 21:44
@pull-request-size pull-request-size bot added size/L and removed size/M labels Jan 23, 2025
@renovate renovate bot force-pushed the renovate/npm-svelte-vulnerability branch from 6e486c4 to 4427763 Compare March 11, 2025 11:40
@renovate renovate bot force-pushed the renovate/npm-svelte-vulnerability branch from 4427763 to ad4d64d Compare April 1, 2025 14:21
@renovate renovate bot force-pushed the renovate/npm-svelte-vulnerability branch from ad4d64d to ae381a3 Compare May 28, 2025 14:22
@renovate renovate bot force-pushed the renovate/npm-svelte-vulnerability branch from ae381a3 to 8cd8923 Compare June 6, 2025 00:13
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