diff --git a/src/core/config/defaults.js b/src/core/config/defaults.js
index ef2daf7db41..2ff789852ec 100644
--- a/src/core/config/defaults.js
+++ b/src/core/config/defaults.js
@@ -15,7 +15,7 @@ const defaultOptions = Object.freeze({
   maxDisplayedTags: -1,
   filter: false,
   validatorUrl: "https://validator.swagger.io/validator",
-  oauth2RedirectUrl: `${window.location.protocol}//${window.location.host}${window.location.pathname.substring(0, window.location.pathname.lastIndexOf("/"))}/oauth2-redirect.html`,
+  oauth2RedirectUrl: undefined,
   persistAuthorization: false,
   configs: {},
   custom: {},
diff --git a/src/core/config/index.js b/src/core/config/index.js
index e0b7d94544a..a789b0b1f15 100644
--- a/src/core/config/index.js
+++ b/src/core/config/index.js
@@ -3,5 +3,6 @@ export { default as storeOptionsFactorization }  from "./factorization/store"
 export { default as optionsFromQuery }  from "./sources/query"
 export { default as optionsFromURL }  from "./sources/url"
 export { default as optionsFromSystem }  from "./sources/system"
+export { default as optionsFromRuntime }  from "./sources/runtime"
 export { default as defaultOptions }  from "./defaults"
 export { default as mergeOptions }  from "./merge"
diff --git a/src/core/config/sources/runtime.js b/src/core/config/sources/runtime.js
new file mode 100644
index 00000000000..38cb4af7c48
--- /dev/null
+++ b/src/core/config/sources/runtime.js
@@ -0,0 +1,18 @@
+/**
+ * @prettier
+ *
+ * Receives options at runtime.
+ */
+
+/* eslint-disable no-undef */
+const optionsFromRuntime = () => () => {
+  const options = {}
+
+  if (globalThis.location) {
+    options.oauth2RedirectUrl = `${globalThis.location.protocol}//${globalThis.location.host}${globalThis.location.pathname.substring(0, globalThis.location.pathname.lastIndexOf("/"))}/oauth2-redirect.html`
+  }
+
+  return options
+}
+
+export default optionsFromRuntime
diff --git a/src/core/index.js b/src/core/index.js
index 1274d332487..bb4bb933386 100644
--- a/src/core/index.js
+++ b/src/core/index.js
@@ -34,6 +34,7 @@ import {
   optionsFromQuery,
   optionsFromURL,
   optionsFromSystem,
+  optionsFromRuntime,
   mergeOptions,
   inlinePluginOptionsFactorization,
   storeOptionsFactorization
@@ -42,7 +43,8 @@ import {
 
 export default function SwaggerUI(userOptions) {
   const queryOptions = optionsFromQuery()(userOptions)
-  let mergedOptions = mergeOptions({}, defaultOptions, userOptions, queryOptions)
+  const runtimeOptions = optionsFromRuntime()()
+  let mergedOptions = mergeOptions({}, defaultOptions, runtimeOptions, userOptions, queryOptions)
   const storeOptions = storeOptionsFactorization(mergedOptions)
   const InlinePlugin = inlinePluginOptionsFactorization(mergedOptions)
 
@@ -57,7 +59,7 @@ export default function SwaggerUI(userOptions) {
     .then((urlOptions) => {
       const urlOptionsFailedToFetch = urlOptions === null
 
-      mergedOptions = mergeOptions({}, defaultOptions, systemOptions, userOptions, urlOptions, queryOptions)
+      mergedOptions = mergeOptions({}, defaultOptions, runtimeOptions, systemOptions, userOptions, urlOptions, queryOptions)
       store.setConfigs(mergedOptions)
       system.configsActions.loaded()