CVE-2026-66062

ADVISORY - github

Summary

Impact

SvelteKit is vulnerable to remote CPU-exhaustion DoS attacks via specifically-crafted Accept headers. The impact is mitigated by default header length limits on most platforms, but in the case of raised or absent limits a denial of service is possible.

Patches

The vulnerability is patched in @sveltejs/kit version 2.70.2.

Common Weakness Enumeration (CWE)

ADVISORY - nist

CWE-1333⁠

Inefficient Regular Expression Complexity

ADVISORY - github

CWE-1333⁠

Inefficient Regular Expression Complexity

Impacted images

Advisories

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