CVE Catalog

CVE-2026-109516

CriticalCVSS 9.8
Published: Translated: NVD NIST

Summary

The Bot for Telegram on WooCommerce plugin (up to and including 1.3.0) is vulnerable to an authentication bypass leading to account takeover. The /wp-json/woo-telegram/v1/main/ REST endpoint lacks webhook signature verification, allowing an unauthenticated attacker to impersonate any WordPress user, including administrators, knowing only their login name.

Risk Assessment

An attacker could obtain a persistent authenticated session for any account, risking full compromise of the WordPress site and privilege escalation to administrator.

Recommendation

Update the plugin to a version later than 1.3.0 or disable it, and consider restricting access to the REST endpoint in the meantime.

Related vulnerabilities

Original NVD description (English source)

The Bot for Telegram on WooCommerce plugin for WordPress is vulnerable to Authentication Bypass leading to Account Takeover in all versions up to, and including, 1.3.0. The `/wp-json/woo-telegram/v1/main/` REST endpoint is registered with `permission_callback => '__return_true'` and performs no Telegram webhook signature verification, allowing an unauthenticated attacker to POST a forged bot update with a `message.chat.id` set to any WordPress login name; `bftow_get_user_system_id()` resolves this attacker-supplied value to the targeted account via `get_user_by('login', $tgId)` with no ownership proof, and writes a login token computed as `md5($_SERVER['HTTP_USER_AGENT'] . time())` — both inputs are fully attacker-controlled or bounded within seconds using the response's own `Date` header. The resulting token is redeemable at the unauthenticated, capability-check-free, and nonce-less `?action=bftow_create_order&bftow_token=` endpoint, which calls `wp_set_auth_cookie()` unconditionally via `login_user_by_id`, issuing a persistent authenticated session cookie for the targeted account to the attacker. This makes it possible for unauthenticated attackers to log in as any WordPress user, including administrators, given only that user's username.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS