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This PR contains the following updates:

Package Type Update Change
svelte (source) devDependencies patch 5.46.1 -> 5.46.4

GitHub Vulnerability Alerts

CVE-2025-15265

Summary

An XSS vulnerability exists in Svelte 5.46.0-2 resulting from improper escaping of hydratable keys. If these keys incorporate untrusted user input, arbitrary JavaScript can be injected into server-rendered HTML.

Details

When using the hydratable function, the first argument is used as a key to uniquely identify the data, such that the value is not regenerated in the browser.

This key is embedded into a <script> block in the server-rendered <head> without escaping unsafe characters. A malicious key can break out of the script context and inject arbitrary JavaScript into the HTML response.

Impact

This is a cross-site scripting vulnerability affecting applications that have the experimental.async flag enabled and use hydratable with keys incorporating untrusted user input.

  • Impact: Arbitrary JS execution in the client’s browser.
  • Exploitability: Remote, single-request if key is attacker-controlled.
  • Typical Outcomes:
    • Session/token theft
    • DOM defacement
    • CSRF bypass via injected JS
    • Account takeover depending on cookie/session strategy

Affected applications should upgrade to a patched version immediately.


Release Notes

sveltejs/svelte (svelte)

v5.46.4

Compare Source

Patch Changes

v5.46.3

Compare Source

Patch Changes
  • fix: reconnect clean deriveds when they are read in a reactive context (#​17362)

Configuration

📅 Schedule: Branch creation - "" in timezone Europe/Berlin, Automerge - At any time (no schedule defined).

🚦 Automerge: Enabled.

Rebasing: Whenever PR is behind base branch, 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

This PR has been generated by Renovate Bot.

@zon-renovate zon-renovate merged commit 986d93b into main Jan 15, 2026
1 check passed
@zon-renovate zon-renovate deleted the renovate/npm-svelte-vulnerability branch January 15, 2026 21:27
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