Feed/CVE-2026-66062
CVE-2026-66062MEDIUMCVSS 5.3

SvelteKit: ReDoS (O(n^2)) in content negotiation — unauthenticated DoS via the Accept header

Published Aug 7, 2026·Updated Aug 7, 2026

NVD Description

### 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.

Affected Packages (1)

@sveltejs/kitNPM
Fixed in = 2.70.1

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References

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