diff --git a/.changeset/fix-allowed-redirect-origins-port.md b/.changeset/fix-allowed-redirect-origins-port.md
new file mode 100644
index 00000000000..f798c3583c8
--- /dev/null
+++ b/.changeset/fix-allowed-redirect-origins-port.md
@@ -0,0 +1,5 @@
+---
+"@clerk/shared": patch
+---
+
+Fix satellite domain redirect validation incorrectly rejecting URLs with non-default ports. Redirect URLs like `https://app.example.net:5173` (common in local development with Vite or similar dev servers) are now correctly matched against `allowedRedirectOrigins` patterns such as `https://*.example.net`.
diff --git a/.changeset/fix-signup-future-sso-transfer-stale-ref.md b/.changeset/fix-signup-future-sso-transfer-stale-ref.md
new file mode 100644
index 00000000000..1ac84a8a110
--- /dev/null
+++ b/.changeset/fix-signup-future-sso-transfer-stale-ref.md
@@ -0,0 +1,5 @@
+---
+"@clerk/clerk-js": patch
+---
+
+Fix `signUp.update()` sending a PATCH request to `/client/sign_ups` instead of `/client/sign_ups/{id}` after an SSO sign-in transitions to a sign-up flow (e.g. when legal acceptance is required). The `SignUpFuture` reference held by hooks is now preserved across the transition and reflects the correct sign-up id.
diff --git a/packages/clerk-js/src/core/resources/Client.ts b/packages/clerk-js/src/core/resources/Client.ts
index 6b690c7261c..b06ac0b80ae 100644
--- a/packages/clerk-js/src/core/resources/Client.ts
+++ b/packages/clerk-js/src/core/resources/Client.ts
@@ -143,7 +143,11 @@ export class Client extends BaseResource implements ClientResource {
       this.id = data.id;
       this.sessions = (data.sessions || []).map(s => new Session(s));
 
-      if (data.sign_up && this.signUp instanceof SignUp && this.signUp.id === data.sign_up.id) {
+      if (data.sign_up && this.signUp instanceof SignUp && (this.signUp.id === data.sign_up.id || !this.signUp.id)) {
+        // Update in-place when ids match OR when the existing signUp has no id yet
+        // (e.g. an SSO sign-in that transitions to a sign-up flow). Reusing the same
+        // SignUp instance preserves any SignUpFuture references held by hooks so they
+        // remain valid and reflect the correct id after the transition.
         this.signUp.__internal_updateFromJSON(data.sign_up);
       } else {
         this.signUp = new SignUp(data.sign_up);
diff --git a/packages/shared/src/internal/clerk-js/__tests__/url.test.ts b/packages/shared/src/internal/clerk-js/__tests__/url.test.ts
index 63927fae344..84f7abe09df 100644
--- a/packages/shared/src/internal/clerk-js/__tests__/url.test.ts
+++ b/packages/shared/src/internal/clerk-js/__tests__/url.test.ts
@@ -579,6 +579,17 @@ describe('isAllowedRedirect', () => {
     ['https:evil.com', [/https:\/\/www\.clerk\.com/], false],
     ['//evil.com', [/https:\/\/www\.clerk\.com/], false],
     ['..//evil.com', ['https://www.clerk.com'], false],
+    // non-default ports — satellite apps in local dev (e.g. Vite on :5173)
+    // wildcard glob entries accept any port on the matching host
+    ['https://app.example.net:5173', ['https://*.example.net'], true],
+    ['https://app.example.net:5176', ['https://*.example.net'], true],
+    ['https://www.clerk.com:3000', ['https://*.clerk.com'], true],
+    // exact string entries remain port-sensitive (port is part of the origin)
+    ['https://www.clerk.com:3000', ['https://www.clerk.com'], false],
+    ['https://www.clerk.com:3000/path?q=1', ['https://www.clerk.com'], false],
+    // non-default port must not bypass domain validation
+    ['https://evil.com:5173', ['https://*.clerk.com'], false],
+    ['https://evil.clerk.com.evil.com:5173', ['https://*.clerk.com'], false],
   ];
 
   const warnMock = vi.spyOn(logger, 'warnOnce');
diff --git a/packages/shared/src/internal/clerk-js/url.ts b/packages/shared/src/internal/clerk-js/url.ts
index 6c524febf4a..15f11961dae 100644
--- a/packages/shared/src/internal/clerk-js/url.ts
+++ b/packages/shared/src/internal/clerk-js/url.ts
@@ -436,12 +436,22 @@ export const isAllowedRedirect =
 
     const isSameOrigin = currentOrigin === url.origin;
 
+    // When the redirect URL includes a non-default port (common in local dev, e.g. :5173),
+    // url.origin includes the port (https://app.example.net:5173) while glob entries like
+    // https://*.example.net have none. For wildcard/glob entries only, also test the
+    // port-stripped origin so satellite apps on custom ports are not rejected.
+    // Exact string entries (no wildcard) remain port-sensitive to preserve the security boundary.
+    const portlessOrigin = url.port !== '' ? `${url.protocol}//${url.hostname}` : null;
+
     const isAllowed =
       !isProblematicUrl(url) &&
       (isSameOrigin ||
-        allowedRedirectOrigins
-          .map(origin => (typeof origin === 'string' ? globs.toRegexp(trimTrailingSlash(origin)) : origin))
-          .some(origin => origin.test(trimTrailingSlash(url.origin))));
+        allowedRedirectOrigins.some(origin => {
+          const pattern = typeof origin === 'string' ? globs.toRegexp(trimTrailingSlash(origin)) : origin;
+          if (pattern.test(trimTrailingSlash(url.origin))) return true;
+          const isGlobEntry = typeof origin === 'string' && origin.includes('*');
+          return isGlobEntry && portlessOrigin !== null && pattern.test(portlessOrigin);
+        }));
 
     if (!isAllowed) {
       logger.warnOnce(