{"id":"CVE-2026-66062","revision":"0bd93905521643729a4aef21e339a590","records":[{"revision":"0bd93905521643729a4aef21e339a590","observedAt":"2026-10-25T15:18:51.467+00:00","statement":{"source":"nvd","id":"CVE-2026-66062","aliases":[],"title":"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 expres…","description":"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.","state":0,"publishedAt":"2026-08-07T17:17:06.34+00:00","modifiedAt":"2026-10-24T16:10:00.153+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","score":5.3,"severity":"MEDIUM"}],"references":["https://github.com/sveltejs/kit/commit/82712fc02c24b1dcf5b25d7a52129cd8455f04f5","https://github.com/sveltejs/kit/releases/tag/@sveltejs/kit@2.70.2","https://github.com/sveltejs/kit/security/advisories/GHSA-29g2-3rmr-qm68"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-66062","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-1333"],"productCriteria":[],"sourceDates":{"published":"2026-08-07T17:17:06.340","lastModified":"2026-10-24T16:10:00.153"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-66062","identifiers":["CVE-2026-66062"]},"retained":false,"historicalAffected":[]}],"coverage":[]}