---
id: CVE-2026-109516
title: >-
  Bot for Telegram on WooCommerce <= 1.3.0 - Unauthenticated Authentication
  Bypass to Account Takeover via Fake Telegram Webhook + Brute-Forced Login
  Token
summary: >-
  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 wit…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-287
vendor: guruteam
product: Bot for Telegram on WooCommerce
affected:
  - bot_for_telegram_on_woocommerce <= 1.3.0
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-10-29T10:32:41.144741Z'
published: '2026-10-29'
updated: '2026-10-29'
sourceUpdated: '2026-10-29T10:45:43.403Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-109516'
references:
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/1f6b73e0-c154-4bc4-90bc-0929053b77b0?source=cve
  - url: >-
      https://plugins.trac.wordpress.org/browser/bot-for-telegram-on-woocommerce/tags/1.3.0/includes/BFTOW_User.php#L149
  - url: >-
      https://plugins.trac.wordpress.org/browser/bot-for-telegram-on-woocommerce/tags/1.3.0/includes/BFTOW_User.php#L44
  - url: >-
      https://plugins.trac.wordpress.org/browser/bot-for-telegram-on-woocommerce/tags/1.3.0/includes/BFTOW_User.php#L62
  - url: >-
      https://plugins.trac.wordpress.org/browser/bot-for-telegram-on-woocommerce/tags/1.3.0/includes/BFTOW_Telegram.php#L91
  - url: >-
      https://plugins.trac.wordpress.org/browser/bot-for-telegram-on-woocommerce/tags/1.3.0/includes/BFTOW_WooCommerce.php#L42
  - url: >-
      https://plugins.trac.wordpress.org/browser/bot-for-telegram-on-woocommerce/tags/1.3.0/includes/BFTOW_Telegram.php#L98
tags:
  - cve.org
epss: 0.00575
epssPercentile: 0.47731
ingestedAt: '2026-10-31T05:18:25.271Z'
---

## Overview

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.

## Affected

- `bot_for_telegram_on_woocommerce <= 1.3.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.