SSRF in Sveltejs Kit
CVE-2026-114062
SvelteKit before 3.0.0 contains a server-side request forgery vulnerability that allows remote attackers to reach internal services because self-fetch fallbacks follow HTTP redirects automatically. Attackers can manipulate the Host or forwarded headers to point fallback requests at their server, which redirects them to internal services.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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-prjg-x2qj-wj3g (vendor-advisory)
- www.vulncheck.com/advisories/sveltekit-before-3.0.0-ssrf-via-redirects-in-serve… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-114062?
- CVE-2026-114062 is a medium-severity vulnerability in Sveltejs Kit, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.3/10. Published 2026-10-21.
- How severe is CVE-2026-114062?
- Medium severity. CVSS v3 base score is 5.3 out of 10.