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fix: sanitize template-literal-special-characters in SSR attribute values#17692

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Rich-Harris merged 2 commits intomainfrom
elliott/compiler-sanitization-bug
Feb 13, 2026
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fix: sanitize template-literal-special-characters in SSR attribute values#17692
Rich-Harris merged 2 commits intomainfrom
elliott/compiler-sanitization-bug

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@elliott-with-the-longest-name-on-github
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Fixes a minor bug where HTML entities could be decoded into significant characters in the template literal we output for SSR, leading to weird effects. Not a security issue because it has to be literally written into the svelte file you're compiling, but still wrong.

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changeset-bot bot commented Feb 12, 2026

🦋 Changeset detected

Latest commit: 97a25c2

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package
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svelte Patch

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pnpm add https://pkg.pr.new/svelte@17692

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needs changeset but LGTM

@Rich-Harris Rich-Harris temporarily deployed to Publish pkg.pr.new (maintainers) February 13, 2026 01:36 — with GitHub Actions Inactive
@Rich-Harris Rich-Harris merged commit 75e1992 into main Feb 13, 2026
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@Rich-Harris Rich-Harris deleted the elliott/compiler-sanitization-bug branch February 13, 2026 01:47
@github-actions github-actions bot mentioned this pull request Feb 13, 2026
Rich-Harris pushed a commit that referenced this pull request Feb 13, 2026
This PR was opened by the [Changesets
release](https://github.com/changesets/action) GitHub action. When
you're ready to do a release, you can merge this and the packages will
be published to npm automatically. If you're not ready to do a release
yet, that's fine, whenever you add more changesets to main, this PR will
be updated.


# Releases
## svelte@5.51.0

### Minor Changes

- feat: Use `TrustedTypes` for HTML handling where supported
([#16271](#16271))

### Patch Changes

- fix: sanitize template-literal-special-characters in SSR attribute
values ([#17692](#17692))

- fix: follow-up formatting in `print()` — flush block-level elements
into separate sequences
([#17699](#17699))

- fix: preserve delegated event handlers as long as one or more root
components are using them
([#17695](#17695))

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
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2 participants