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THREAT OPS › Threat News › [GHSA] GHSA-29g2-3rmr-qm68 (medium) — SvelteKit: ReDoS (O(n^2)) in content negotiation — unauthenticated DoS via the Accept header

[GHSA] GHSA-29g2-3rmr-qm68 (medium) — SvelteKit: ReDoS (O(n^2)) in content negotiation — unauthenticated DoS via the Accept header

medgithub_advisoriesPublished 2026-08-07

GHSA-29g2-3rmr-qm68 Severity: medium CVE: CVE-2026-66062

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

### 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 ser

Indicators of compromise

CVE-2026-66062cve

Original source: https://github.com/advisories/GHSA-29g2-3rmr-qm68