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CVE-2026-42567

Svelte: ReDoS in `<svelte:element>` Tag Validation PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
sveltejs / svelteaffected >= 5.51.5, < 5.55.7

CWE

CWE-1333

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.