CVE-2025-56676

TitanSystems Zender v3.9.7 contains an account takeover vulnerability in its password reset functionality. A temporary password or reset token issued to one user can be used to log in as another user, due to improper validation of token-user linkage. This allows remote attackers to gain unauthorized access to any user account by exploiting the password reset mechanism. The vulnerability occurs because the reset token is not correctly bound to the requesting account and is accepted for other user emails during login, enabling privilege escalation and information disclosure.

• CWE-1259

• https://codecanyon.net/item/zender-android-mobile-devices-as-sms-gateway-saas-platform/26594230Product
• https://darklotus.medium.com/cve-2025-56676-critical-vulnerability-in-zender-gateway-allows-account-takeover-2b5bcb50c762Third Party Advisory
• https://previews.titansystems.ph/zender/dashboard/authPermissions Required

Published

Sep 30, 2025

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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