CVE-2026-42567 [HIGH] – Svelte is a performance oriented web framework. From version 5.51.5 to before version 5.55

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 . This issue has been patched in version 5.55.7.