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CVE-2026-107636— pH7Builder before 18.5.1 Payment Bypass via Payment Module MainController

Quick assessment

Affected
ph7software ph7builder
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 pH7Builder（pH7 Social Dating CMS）18.5.1 版本之前，存在一个支付验证漏洞，允许权限较低的注册用户通过提供客户端可控制的计划和金额字段，获取任意会员等级。攻击者可以在支付少量代币时设置 item_number、cart_order_id 或 PayPal 自定义字段，或者提交未完成的 PayPal IPN（即时付款通知）支付，从而获得最昂贵的会员等级及其付费功能。

CVSS 6.5 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
ph7software ph7builder < 18.5.1 affected
18.5.1 unaffected
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I. Basic Information for CVE-2026-107636

Vulnerability Information
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Vulnerability Title
pH7Builder before 18.5.1 Payment Bypass via Payment Module MainController
Source: CVE Program / CVE List V5
Vulnerability Description
pH7Builder (pH7 Social Dating CMS) before 18.5.1 contains a payment validation vulnerability that allows registered low-privileged members to obtain any membership tier by supplying client-controlled plan and amount fields. Attackers can set item_number, cart_order_id, or the PayPal custom field while paying a token amount, or submit uncompleted PayPal IPN payments, to gain the most expensive membership and its paid features.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对假设不可变Web参数的外部可控制
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
ph7software ph7builder 0 ~ 18.5.1 -

II. Public POCs for CVE-2026-107636

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III. Intelligence Information for CVE-2026-107636

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Vendor Advisories for CVE-2026-107636 (1)

Other References for CVE-2026-107636 (2)

Same Patch Batch · ph7software · 2026-10-08 · 3 CVEs total

CVE-2026-107638 6.8 MEDIUM pH7Builder before 18.5.0 2FA Brute Force via VerificationCodeFormProcess.php
CVE-2026-107637 4.3 MEDIUM pH7Builder before 18.5.0 Improper Authorization via Note Module delete() Action

IV. Related Vulnerabilities

Same product: ph7builder
Same vendor: ph7software
Same weakness: CWE-472

V. Comments for CVE-2026-107636

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