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CVE-2026-107638— pH7Builder before 18.5.0 2FA Brute Force via VerificationCodeFormProcess.php

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.

pH7Builder（pH7 Social Dating CMS）在 18.5.0 版本之前存在一个“身份验证尝试限制不当”的安全漏洞，攻击者可通过无限制地猜测基于时间的一次性密码（TOTP）代码，从而绕过双因素身份验证。已知某个账户密码的攻击者可以向 VerificationCodeFormProcess.php 提交无限数量的 6 位验证代码，进而接管会员、联盟会员或管理员账户。

CVSS 6.8 · Medium

Possible ATT&CK Techniques 1 AI

T1110.004 · Credential Stuffing
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I. Basic Information for CVE-2026-107638

Vulnerability Information
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Vulnerability Title
pH7Builder before 18.5.0 2FA Brute Force via VerificationCodeFormProcess.php
Source: CVE Program / CVE List V5
Vulnerability Description
pH7Builder (pH7 Social Dating CMS) before 18.5.0 contains an improper restriction of authentication attempts vulnerability that allows attackers to bypass two-factor authentication by guessing TOTP codes without limits. Attackers who know an account password can submit unlimited 6-digit verification codes to VerificationCodeFormProcess.php to take over member, affiliate, or administrator accounts.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
过多认证尝试的限制不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
ph7software ph7builder 0 ~ 18.5.0 -

II. Public POCs for CVE-2026-107638

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III. Intelligence Information for CVE-2026-107638

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Other References for CVE-2026-107638 (1)

Other References for CVE-2026-107638 (3)

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

CVE-2026-107636 6.5 MEDIUM pH7Builder before 18.5.1 Payment Bypass via Payment Module MainController
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-307

V. Comments for CVE-2026-107638

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