MEDIUM 5.3 NVD

CVE-2026-66062

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 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.

References

Published: 2026-08-07 · Source: NVD · Feed updated: 2026-08-10
This medium severity vulnerability with a CVSS score of 5.3 was published on 2026-08-07 via NVD.
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