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CVE-2026-67398

Quick assessment

Affected
WebPros WHMCS
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.

在 WHMCS 的 2Checkout 支付网关中存在缺失授权（Missing Authorization）漏洞： 受影响版本： - WHMCS 8.13.0 至 8.13.8 之前； - WHMCS 9.0.0 至 9.0.8 之前； - 其他已停止支持（EOL）的 4.5.0 及更早版本。 漏洞影响： 在特定条件下，未认证用户可以通过访问 2Checkout 支付网关的接口端点，获取 WHMCS 客户的数据，从而造成数据泄露。

CVSS 8.2 · High

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-67398

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Missing authorization vulnerability has been discovered in 2Checkout payment gateway of WHMCS from 8.13.0 before 8.13.8, from 9.0.0 before 9.0.8, all other EOL versions from 4.5.0. The vulnerability allows an unauthenticated user to get WHMCS customer's data via 2Checkout payment gateway's endpoint under specific conditions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
WebPros WHMCS 4.5.0 ~ 8.12.2 -

II. Public POCs for CVE-2026-67398

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III. Intelligence Information for CVE-2026-67398

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Vendor Pages for CVE-2026-67398 (1)

Same Patch Batch · WebPros · 2026-09-03 · 3 CVEs total

CVE-2026-67402 9.2 CRITICAL CSF 16.31前Messenger未授权RCE
CVE-2026-67397 8.5 HIGH Plesk 18.0.80.5 及以下版本路径遍历提权漏洞

IV. Related Vulnerabilities

Same product: WHMCS
Same vendor: WebPros
Same weakness: CWE-862

V. Comments for CVE-2026-67398

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