From d4fd44f16df9fb825c586d07cb1c27ec96d7d620 Mon Sep 17 00:00:00 2001
From: Atila Fassina <atila@fassina.eu>
Date: Wed, 8 Apr 2026 13:27:32 +0200
Subject: [PATCH 1/2] escape Location header with `JSON.stringify`

---
 packages/start/src/server/handler.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/start/src/server/handler.ts b/packages/start/src/server/handler.ts
index 3b0609db9..fb703ccc2 100644
--- a/packages/start/src/server/handler.ts
+++ b/packages/start/src/server/handler.ts
@@ -213,7 +213,7 @@ function handleStreamCompleteRedirect(context: PageEvent) {
   return ({ write }: { write: (html: string) => void }) => {
     context.complete = true;
     const to = context.response && context.response.headers.get("Location");
-    to && write(`<script>window.location="${to}"</script>`);
+    to && write(`<script>window.location=${JSON.stringify(to).replace(/</g, "\\u003c")}</script>`);
   };
 }
 

From 4f8000e509137d861b3b9d125426518299054783 Mon Sep 17 00:00:00 2001
From: Atila Fassina <atila@fassina.eu>
Date: Wed, 8 Apr 2026 13:46:58 +0200
Subject: [PATCH 2/2] add changeset

---
 .changeset/sanitize-location-header.md | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 .changeset/sanitize-location-header.md

diff --git a/.changeset/sanitize-location-header.md b/.changeset/sanitize-location-header.md
new file mode 100644
index 000000000..08d685721
--- /dev/null
+++ b/.changeset/sanitize-location-header.md
@@ -0,0 +1,5 @@
+---
+"@solidjs/start": patch
+---
+
+Sanitize Location header value in streaming redirect script