CVE-2026-42567
5.9
CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| sveltejs | svelte | >= 5.51.5, < 5.55.7 | affected |
Weaknesses
- CWE-1333: CWE-1333: Inefficient Regular Expression Complexity
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
- https://github.com/sveltejs/svelte/security/advisories/GHSA-9rmh-mm8f-r9h6
- https://github.com/sveltejs/svelte/releases/tag/svelte%405.55.7
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