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TI-2026-69588 Aliases CVE-2026-107638GHSA-grjj-qrfp-h6h9

Missing rate limit on 2FA codes in pH7Builder lets attackers take over accounts

Priority LOW 35CWE-307Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-307.

Summary

pH7Builder (pH7 Social Dating CMS) before 18.5.0 contains an improper restriction of authentication attempts (CWE-307) that lets attackers bypass two-factor authentication. Attackers who already know an account password can submit unlimited 6-digit verification codes to VerificationCodeFormProcess.php by guessing TOTP codes, which allows them to take over member, affiliate, or administrator accounts.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00365 30th percentileScored 2026-11-07
Fix Fixed ph7builder (ph7software): 18.5.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ph7softwareph7builderbefore 18.5.018.5.0Patch availableCNA
  • ph7builder Vendorph7software Affected before 18.5.0 Fixed in 18.5.0 Patch available CNA

Remediation

Upgrade pH7Builder to version 18.5.0, which fixes this issue. CISA has not listed this vulnerability as exploited.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA ph7builder (ph7software) Fixed in 18.5.0

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    ph7software ph7builder 18.5.0

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2026-69587 pH7Builder note module flaw lets members delete others' notesPriority LOW 24
    Show all 2 records →

Timeline

  1. 2026-10-08 Threatist record created from CVE-2026-107638
  2. 2026-10-08 Alias added: GHSA-grjj-qrfp-h6h9
  3. 2026-10-08 CISA SSVC decision points changed
  4. 2026-10-08 Priority changed: MEDIUM → LOW

References

Patch 1

Other 2

  • TI-2026-70783 Hard-coded API key in pH7Builder lets attackers bypass API access checks CVSS 4.0HIGH 8.7
  • TI-2026-70781 CAPTCHA bypass in pH7Builder via client-chosen form ID CVSS 4.0MEDIUM 6.9
  • TI-2026-70780 Path traversal in pH7Builder lets members delete arbitrary files CVSS 4.0HIGH 7.2
  • TI-2026-70782 Member API in pH7Builder exposes password hashes and TOTP secrets CVSS 4.0HIGH 7.1
  • TI-2026-69586 Payment bypass in pH7Builder lets members obtain higher membership tiers CVSS 4.0HIGH 7.1
  • TI-2026-69587 pH7Builder note module flaw lets members delete others' notes CVSS 4.0MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences