CVSS
5.3
CVSS v3.1
EPSS
0.3%
Exploit Prediction Score
Published
August 7, 2026
Exploitability
EPSS probability 0.3%
SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. Prior to 2.70.2, the content negotiation header parser used by SvelteKit's request handling (for headers such as Accept) uses a regular expression vulnerable to quadratic backtracking, so a maliciously crafted header value can cause excessive CPU consumption and degrade or deny service. Version 2.70.2 fixes the issue.
No package data available.
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