cvedb.io
CVE-2026-42567
HIGH · CVSS 7.5
EPSS exploitation probability: 0%
Published 2026-06-09T17:17:07.100 · Last modified 2026-06-17T10:48:02.983

Summary

Svelte is a performance oriented web framework. From version 5.51.5 to before version 5.55.7, an internal regex in the Svelte runtime can take exponential time to test in <svelte:element this={tag}></svelte:element>. This issue has been patched in version 5.55.7.

Affected products

svelte — svelte

Does this affect you?

Add your gear to cvedb and we'll alert you only when svelte ships something exploited.

Check my exposure →

References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.