---
id: CVE-2026-107638
title: >-
  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
summary: >-
  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 kno…
severity: medium
cvss: 6.8
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-307
vendor: ph7software
product: ph7builder
affected:
  - ph7builder < 18.5.0
published: '2026-10-08'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T18:17:25.320'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-107638'
references:
  - url: 'https://github.com/pH7Software/pH7-Social-Dating-CMS'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/pH7Software/pH7-Social-Dating-CMS/blob/v18.4.1/_protected/app/system/modules/two-factor-auth/forms/processing/VerificationCodeFormProcess.php#L34-L60
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/pH7Software/pH7-Social-Dating-CMS/commit/44970860b82f8af867de9d2832081485f5dbe578
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/ph7builder-before-18.5.0-2fa-brute-force-via-verificationcodeformprocess-php
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-08T18:01:40.593351Z'
ingestedAt: '2026-10-08T14:47:16.357Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.