Path Traversal in Sveltejs Kit
CVE-2026-114063
SvelteKit (@sveltejs/kit) from 2.10.0 before 3.0.0 contains a path traversal vulnerability in the vite preview server on Windows that allows unauthenticated attackers to read files outside the prerendered output directory. Attackers who can reach the preview server through network access or a tunnel can send crafted requests to expose source code, configuration, or credentials readable by the server process.
Vulnerability class: Path Traversal (Directory Traversal)
Published .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/sveltejs/kit/security/advisories/GHSA-xgrj-p7pg-6vm3 (vendor-advisory)
- www.vulncheck.com/advisories/sveltekit-2.10.0-before-3.0.0-path-traversal-via-v… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-114063?
- CVE-2026-114063 is a high-severity vulnerability in Sveltejs Kit, classified under Path Traversal. CVSS score: 7.5/10. Published 2026-10-21.
- How severe is CVE-2026-114063?
- High severity. CVSS v3 base score is 7.5 out of 10.