Vulnerability · Published Oct 21, 2026 · Assigned by VulnCheck

CVE-2026-114060SvelteKit before 3.0.0 Open Redirect via Enhanced Form Actions

Medium 4.7

In plain English

A medium-severity open redirect in kit from sveltejs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 10% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)4.7Medium

Exploit odds (30 days)0.2%top 89.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

SvelteKit (@sveltejs/kit) before 3.0.0 contains an open redirect vulnerability in enhanced form actions (use:enhance) on routes accepting paths beginning with a double slash. Attackers can craft action paths starting with // that become protocol-relative URLs, causing non-redirect form results to navigate victims to attacker-controlled sites.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	@sveltejs/kit	3.0.0	GHSA-pfhg-q3qv-9q6r

Affected products (as reported)

Vendor	Product	Versions
sveltejs	kit	0 – before 3.0.0

Weakness: CWE-601 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

References

GitHub Security Advisory (GHSA-pfhg-q3qv-9q6r) vendor-advisory
VulnCheck Advisory: SvelteKit before 3.0.0 Open Redirect via Enhanced Form Actions third-party-advisory