---
id: "GHSA-pvhg-7v4p-f5q9"
kind: "vulnerability"
aliases: ["GHSA-pvhg-7v4p-f5q9"]
title: "Duplicate Advisory: SvelteKit before 3.0.0 Open Redirect via Enhanced Form Actions"
severity: "medium"
cvss: 4.7
epss: null
exploited: false
status: "withdrawn"
category: "package"
products: [{"name": "@sveltejs/kit", "fixed": [], "affected": "< 3.0.0", "ecosystem": "npm"}]
ecosystems: ["npm"]
tags: ["cwe-601", "next.js", "package", "self-hosted", "svelte", "sveltekit"]
not_affected_if: ["no-use-enhance-forms", "static-export"]
published_at: "2026-10-21T03:32:18+00:00"
first_seen_at: "2026-10-23T20:59:05+00:00"
updated_at: "2026-10-23T21:00:27+00:00"
sources: [{"source": "ghsa", "url": "https://github.com/advisories/GHSA-pvhg-7v4p-f5q9", "first_seen_at": "2026-10-23T20:59:05+00:00"}]
---

# Duplicate Advisory: SvelteKit before 3.0.0 Open Redirect via Enhanced Form Actions

SvelteKit's enhanced form actions (use:enhance) can be made to navigate the browser to an attacker-controlled site when an action path begins with a double slash. An attacker who can influence that path can send a victim to a phishing or malicious page.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- npm:@sveltejs/kit affected < 3.0.0 fixed ?

## How to check

Check the installed version with: npm ls @sveltejs/kit
Any version below 3.0.0 is in the stated affected range, but the advisory is withdrawn as a duplicate of GHSA-pfhg-q3qv-9q6r.

## Fix

Upgrade @sveltejs/kit to 3.0.0 or later, or follow the fix in GHSA-pfhg-q3qv-9q6r, the advisory this one duplicates.

## Timeline

- 2026-10-23T20:59:05+00:00 ghsa https://github.com/advisories/GHSA-pvhg-7v4p-f5q9

## From the sources

## Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-pfhg-q3qv-9q6r. This link is maintained to preserve external references.

## Original 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.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_