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TI-2026-70781 Aliases CVE-2026-108903GHSA-q5mq-9wc6-h8x8

CAPTCHA bypass in pH7Builder via client-chosen form ID

Priority LOW 36CWE-807Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

pH7Builder (pH7 Social Dating CMS) before 19.3.0 contains a CAPTCHA bypass in the PFBC Form::isValid() check. The flaw relies on a client-chosen form ID, tracked as CWE-807, so unauthenticated attackers can skip form validation. An attacker can load a CAPTCHA-free form such as login or search and submit its ID with contact, comment, forum, invite or signup data to automate abuse.

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

Description from the CNA

pH7Builder (pH7 Social Dating CMS) before 19.3.0 contains a CAPTCHA bypass vulnerability that allows unauthenticated attackers to skip form validation by supplying a client-chosen form ID to PFBC Form::isValid(). Attackers can load a CAPTCHA-free form like login or search, then submit its ID with contact, comment, forum, invite or signup data to automate abuse.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0027 19th percentileScored 2026-11-07
Fix Fixed ph7builder (ph7software): 19.3.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

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 19.3.019.3.0Patch availableCNA
  • ph7builder Vendorph7software Affected before 19.3.0 Fixed in 19.3.0 Patch available CNA

Remediation

Update pH7Builder to version 19.3.0, which fixes the flaw. CISA has not added this vulnerability to its Known Exploited Vulnerabilities catalog.

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

  • Fix · CNA ph7builder (ph7software) Fixed in 19.3.0

Timeline

  1. 2026-10-11 Threatist record created from CVE-2026-108903
  2. 2026-10-11 Alias added: GHSA-q5mq-9wc6-h8x8
  3. 2026-10-12 Priority changed: MEDIUM → LOW
  4. 2026-10-13 CISA SSVC decision points changed

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-2026-69588 Missing rate limit on 2FA codes in pH7Builder lets attackers take over accounts CVSS 4.0HIGH 7.6
  • 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