CVE-2026-15964
CriticalCVSS 9.8Exploitation Probability (EPSS)
Low risk39th percentile - higher than 39% of all known CVEs
Summary
The Single Sign On For TNG plugin for WordPress is vulnerable to authentication bypass via unauthenticated password reset. The `ssoprocess_ajax()` function accepts an `email` parameter and calls `reset_password()` without any ownership token or email confirmation. The only guard is a nonce that is publicly broadcast on every page, allowing an attacker to capture it and change any account's password, including administrator accounts.
Risk Assessment
An attacker can fully compromise the WordPress site by changing the administrator password without any authentication.
Recommendation
Immediately update the Single Sign On For TNG plugin to the latest available version that fixes this vulnerability.
Original NVD description (English source)
The Single Sign On For TNG plugin for WordPress is vulnerable to Authentication Bypass via unauthenticated password reset in all versions up to, and including, 2.0.0. This is due to the `ssoprocess_ajax()` function — registered on `wp_ajax_nopriv_ssoprocess_ajax` and therefore reachable without authentication — accepting an attacker-supplied `email` parameter with the `setnewpassword` operation and calling `reset_password()` on the resolved account without any ownership token, email confirmation link, or capability check. The sole guard is a call to `check_ajax_referer()`, which provides no authorization barrier because the `ssoajaxnonce` nonce is publicly broadcast on every front-end page via `wp_localize_script()` into the `SSOPWDREQUIREMENT` JavaScript object; since WordPress computes nonces for logged-out visitors against a shared anonymous session context, any unauthenticated visitor can scrape a valid nonce from the homepage and use it to authenticate the request. This makes it possible for unauthenticated attackers to change the password of any WordPress account, including administrator accounts, enabling complete site takeover.