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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.

WebPros WHMCS是WebPros公司的一款账单管理及客户关系管理软件。 WebPros WHMCS 4.5.0至8.12.2版本、8.13.0至8.13.8之前版本和9.0.0至9.0.8之前版本存在授权问题漏洞，该漏洞源于2Checkout支付网关存在授权缺失问题，在特定条件下可能导致未经身份验证的用户通过该网关端点获取WHMCS客户数据。

CVSS 8.2 · High EPSS 0.47% · P40

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 3

VendorProduct Version RangeStatus
WebPros WHMCS 4.5.0< 8.12.2 affected
8.13.0< 8.13.7 affected
9.0.0< 9.0.8 affected
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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 8.13.7, 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
Vulnerability Title
WebPros WHMCS 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WebPros WHMCS是WebPros公司的一款账单管理及客户关系管理软件。 WebPros WHMCS 4.5.0至8.12.2版本、8.13.0至8.13.8之前版本和9.0.0至9.0.8之前版本存在授权问题漏洞，该漏洞源于2Checkout支付网关存在授权缺失问题，在特定条件下可能导致未经身份验证的用户通过该网关端点获取WHMCS客户数据。
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
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 WebPros ConfigServer Security & Firewall 权限许可和访问控制问题漏洞
CVE-2026-67397 8.5 HIGH WebPros Plesk 路径遍历漏洞

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-67398

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