diff --git a/apps/browser/src/autofill/background/overlay.background.ts b/apps/browser/src/autofill/background/overlay.background.ts
index 35585d58863..452015a6fe1 100644
--- a/apps/browser/src/autofill/background/overlay.background.ts
+++ b/apps/browser/src/autofill/background/overlay.background.ts
@@ -53,6 +53,7 @@ import { LoginView } from "@bitwarden/common/vault/models/view/login.view";
 // eslint-disable-next-line no-restricted-imports
 import { openUnlockPopout } from "../../auth/popup/utils/auth-popout-window";
 import { BrowserApi } from "../../platform/browser/browser-api";
+import { ExtensionUrlTokenService } from "../../platform/services/extension-url-token.service";
 // FIXME (PM-22628): Popup imports are forbidden in background
 // eslint-disable-next-line no-restricted-imports
 import {
@@ -236,6 +237,7 @@ export class OverlayBackground implements OverlayBackgroundInterface {
     private accountService: AccountService,
     private generatePasswordCallback: () => Promise<string>,
     private addPasswordCallback: (password: string) => Promise<void>,
+    private extensionUrlTokenService: ExtensionUrlTokenService,
   ) {
     this.initOverlayEventObservables();
   }
@@ -2947,7 +2949,7 @@ export class OverlayBackground implements OverlayBackgroundInterface {
 
     this.postMessageToPort(port, {
       command: `initAutofillInlineMenu${isInlineMenuListPort ? "List" : "Button"}`,
-      iframeUrl: chrome.runtime.getURL(
+      iframeUrl: this.extensionUrlTokenService.createTokenUrl(
         `overlay/menu-${isInlineMenuListPort ? "list" : "button"}.html`,
       ),
       pageTitle: chrome.i18n.getMessage(
diff --git a/apps/browser/src/autofill/overlay/inline-menu/pages/menu-container/autofill-inline-menu-container.ts b/apps/browser/src/autofill/overlay/inline-menu/pages/menu-container/autofill-inline-menu-container.ts
index 663eae9144a..80fae91f887 100644
--- a/apps/browser/src/autofill/overlay/inline-menu/pages/menu-container/autofill-inline-menu-container.ts
+++ b/apps/browser/src/autofill/overlay/inline-menu/pages/menu-container/autofill-inline-menu-container.ts
@@ -1,5 +1,6 @@
 // FIXME: Update this file to be type safe and remove this and next line
 // @ts-strict-ignore
+import { validateExtensionUrl } from "@bitwarden/browser/platform/utils/extension-url-token.utils";
 import { EVENTS } from "@bitwarden/common/autofill/constants";
 
 import { setElementStyles } from "../../../../utils";
@@ -60,7 +61,14 @@ export class AutofillInlineMenuContainer {
    *
    * @param message - The message containing the iframe url and page title.
    */
-  private handleInitInlineMenuIframe(message: InitAutofillInlineMenuElementMessage) {
+  private async handleInitInlineMenuIframe(message: InitAutofillInlineMenuElementMessage) {
+    const isValidUrl = await validateExtensionUrl(message.iframeUrl);
+    if (!isValidUrl) {
+      // eslint-disable-next-line no-console
+      console.error("Token not found");
+      return;
+    }
+
     this.defaultIframeAttributes.src = message.iframeUrl;
     this.defaultIframeAttributes.title = message.pageTitle;
     this.portName = message.portName;
diff --git a/apps/browser/src/background/main.background.ts b/apps/browser/src/background/main.background.ts
index 3e6eac1f13a..eb6852face3 100644
--- a/apps/browser/src/background/main.background.ts
+++ b/apps/browser/src/background/main.background.ts
@@ -317,6 +317,7 @@ import BrowserInitialInstallService from "../platform/services/browser-initial-i
 import BrowserLocalStorageService from "../platform/services/browser-local-storage.service";
 import BrowserMemoryStorageService from "../platform/services/browser-memory-storage.service";
 import { BrowserScriptInjectorService } from "../platform/services/browser-script-injector.service";
+import { ExtensionUrlTokenService } from "../platform/services/extension-url-token.service";
 import I18nService from "../platform/services/i18n.service";
 import { LocalBackedSessionStorageService } from "../platform/services/local-backed-session-storage.service";
 import { BackgroundPlatformUtilsService } from "../platform/services/platform-utils/background-platform-utils.service";
@@ -452,6 +453,7 @@ export default class MainBackground {
   syncServiceListener: SyncServiceListener;
   browserInitialInstallService: BrowserInitialInstallService;
   backgroundSyncService: BackgroundSyncService;
+  extensionUrlTokenService: ExtensionUrlTokenService;
 
   webPushConnectionService: WorkerWebPushConnectionService | UnsupportedWebPushConnectionService;
   themeStateService: DefaultThemeStateService;
@@ -1140,6 +1142,8 @@ export default class MainBackground {
 
     this.browserInitialInstallService = new BrowserInitialInstallService(this.stateProvider);
 
+    this.extensionUrlTokenService = new ExtensionUrlTokenService();
+
     if (BrowserApi.isManifestVersion(3)) {
       const registration = (self as unknown as { registration: ServiceWorkerRegistration })
         ?.registration;
@@ -1962,6 +1966,7 @@ export default class MainBackground {
       this.accountService,
       () => this.generatePassword(),
       (password) => this.addPasswordToHistory(password),
+      this.extensionUrlTokenService,
     );
 
     this.autofillBadgeUpdaterService = new AutofillBadgeUpdaterService(
diff --git a/apps/browser/src/background/runtime.background.ts b/apps/browser/src/background/runtime.background.ts
index de0d79a89db..853e15a2935 100644
--- a/apps/browser/src/background/runtime.background.ts
+++ b/apps/browser/src/background/runtime.background.ts
@@ -80,6 +80,9 @@ export default class RuntimeBackground {
         BiometricsCommands.GetBiometricsStatusForUser,
         BiometricsCommands.CanEnableBiometricUnlock,
         "getUserPremiumStatus",
+        "createTokenExtensionUrl",
+        "validateExtensionUrl",
+        "revokeExtensionUrlToken",
       ];
 
       if (messagesWithResponse.includes(msg.command)) {
@@ -213,6 +216,16 @@ export default class RuntimeBackground {
         );
         return result;
       }
+      case "createTokenExtensionUrl": {
+        return this.main.extensionUrlTokenService.createTokenUrl(msg.path);
+      }
+      case "validateExtensionUrl": {
+        return this.main.extensionUrlTokenService.validateUrl(msg.url);
+      }
+      case "revokeExtensionUrlToken": {
+        this.main.extensionUrlTokenService.revokeToken(msg.url);
+        return true;
+      }
     }
   }
 
diff --git a/apps/browser/src/platform/services/abstractions/extension-url-token.service.ts b/apps/browser/src/platform/services/abstractions/extension-url-token.service.ts
new file mode 100644
index 00000000000..52b6b92aed9
--- /dev/null
+++ b/apps/browser/src/platform/services/abstractions/extension-url-token.service.ts
@@ -0,0 +1,11 @@
+export abstract class ExtensionUrlTokenService {
+  abstract generateToken(): string;
+
+  abstract createTokenUrl(path: string): string;
+
+  abstract validateUrl(url: string): boolean;
+
+  abstract revokeToken(url: string): void;
+
+  abstract extractToken(url: string): string | null;
+}
diff --git a/apps/browser/src/platform/services/extension-url-token.service.ts b/apps/browser/src/platform/services/extension-url-token.service.ts
new file mode 100644
index 00000000000..22c242d704d
--- /dev/null
+++ b/apps/browser/src/platform/services/extension-url-token.service.ts
@@ -0,0 +1,40 @@
+import { ExtensionUrlTokenService as ExtensionUrlTokenServiceAbstraction } from "./abstractions/extension-url-token.service";
+
+export class ExtensionUrlTokenService implements ExtensionUrlTokenServiceAbstraction {
+  private validTokens = new Set<string>();
+
+  generateToken(): string {
+    const token = crypto.randomUUID();
+    this.validTokens.add(token);
+    return token;
+  }
+
+  createTokenUrl(path: string): string {
+    const token = this.generateToken();
+    const baseUrl = chrome.runtime.getURL(path);
+    const url = new URL(baseUrl);
+    url.searchParams.set("token", token);
+    return url.toString();
+  }
+
+  validateUrl(url: string): boolean {
+    const token = this.extractToken(url);
+    return token !== null && this.validTokens.has(token);
+  }
+
+  revokeToken(url: string): void {
+    const token = this.extractToken(url);
+    if (token) {
+      this.validTokens.delete(token);
+    }
+  }
+
+  extractToken(url: string): string | null {
+    try {
+      const urlObj = new URL(url);
+      return urlObj.searchParams.get("token");
+    } catch {
+      return null;
+    }
+  }
+}
diff --git a/apps/browser/src/platform/utils/extension-url-token.utils.ts b/apps/browser/src/platform/utils/extension-url-token.utils.ts
new file mode 100644
index 00000000000..5639aa1a459
--- /dev/null
+++ b/apps/browser/src/platform/utils/extension-url-token.utils.ts
@@ -0,0 +1,36 @@
+export async function createTokenExtensionUrl(path: string): Promise<string> {
+  const response = await chrome.runtime.sendMessage({
+    command: "createTokenExtensionUrl",
+    path: path,
+  });
+
+  if (response?.error) {
+    throw new Error(response.error.message || "Failed to create token URL");
+  }
+
+  return response.result;
+}
+
+export async function validateExtensionUrl(url: string): Promise<boolean> {
+  const response = await chrome.runtime.sendMessage({
+    command: "validateExtensionUrl",
+    url: url,
+  });
+
+  if (response?.error) {
+    throw new Error(response.error.message || "Failed to validate URL");
+  }
+
+  return response.result;
+}
+
+export async function revokeExtensionUrlToken(url: string): Promise<void> {
+  const response = await chrome.runtime.sendMessage({
+    command: "revokeExtensionUrlToken",
+    url: url,
+  });
+
+  if (response?.error) {
+    throw new Error(response.error.message || "Failed to revoke token");
+  }
+}