CVE-2026-42567
Svelte: ReDoS in `<svelte:element>` Tag Validation
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-1333 |
| Vendor | sveltejs |
| Product | svelte |
| Published | Jun 9, 2026 |
| Last Updated | Jun 9, 2026 |
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Affected Versions
sveltejs / svelte
>= 5.51.5, < 5.55.7