Vulnerability library
Security checkJanuary 16, 2026

svelte is vulnerable to XSS with textarea bind:value

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High severitynpmsvelte

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Description

A server-side rendered <textarea> with two-way bound value does not have its value correctly escaped in the rendered HTML.

Recommendation

Update the svelte package to the latest compatible version. Followings are version details:

  • Affected version(s): >= 3.0.0, < 3.59.2
  • Patched version(s): 3.59.2

References

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See something that needs correcting? Let us knowUpdated January 16, 2026