Ghost/ghost/admin/app/components/modal-re-authenticate.hbs

<header class="modal-header">
    <h1>Please re-authenticate</h1>
</header>
<a class="close" href="" role="button" title="Close" {{action "closeModal"}}>{{svg-jar "close"}}<span class="hidden">Close</span></a>

<div class="modal-body {{if this.authenticationError 'error'}}">

    <form id="login" class="login-form" method="post" novalidate="novalidate" {{action "confirm" on="submit"}}>
        <GhValidationStatusContainer @class="password-wrap" @errors={{this.errors}} @property="password" @hasValidated={{this.hasValidated}}>
            <GhTextInput
                @class="password"
                @type="password"
                @placeholder="Password"
                @name="password"
                @value={{readonly this.password}}
                @input={{action (mut this.password) value="target.value"}} />
        </GhValidationStatusContainer>
        <div>
            <GhTaskButton @buttonText="Log in" @task={{this.reauthenticate}} @class="gh-btn gh-btn-black gh-btn-icon" @type="submit" />
        </div>
    </form>

   {{#if this.authenticationError}}
     <p class="response">{{this.authenticationError}}</p>
   {{/if}}
</div>