Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-15964— Single Sign On For TNG <= 2.0.0 - Unauthenticated Privilege Escalation via Unverified Password Change

Quick assessment

Affected
britcoder Single Sign On For TNG
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress Single Sign On For TNG是WordPress基金会开源的一款单点登录身份认证软件。 WordPress Single Sign On For TNG 2.0.0及之前版本存在授权问题漏洞，该漏洞源于ssoprocess_ajax()函数缺少所有权令牌、邮箱确认链接或能力检查，可能导致未经身份验证的攻击者重置任意账户密码，包括管理员账户，从而完全接管网站。

CVSS 9.8 · Critical EPSS 0.89% · P60

Affected Version Matrix 1

VendorProduct Version RangeStatus
britcoder Single Sign On For TNG ≤ 2.0.0 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-15964

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Single Sign On For TNG <= 2.0.0 - Unauthenticated Privilege Escalation via Unverified Password Change
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未经验证的口令修改
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress Single Sign On For TNG 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Single Sign On For TNG是WordPress基金会开源的一款单点登录身份认证软件。 WordPress Single Sign On For TNG 2.0.0及之前版本存在授权问题漏洞，该漏洞源于ssoprocess_ajax()函数缺少所有权令牌、邮箱确认链接或能力检查，可能导致未经身份验证的攻击者重置任意账户密码，包括管理员账户，从而完全接管网站。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
britcoder Single Sign On For TNG 0 ~ 2.0.0 -

II. Public POCs for CVE-2026-15964

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-15964

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-15964 (1)

Vendor Advisories for CVE-2026-15964 (1)

IV. Related Vulnerabilities

Same product: Single Sign On For TNG
Same weakness: CWE-620