All vulnerabilities
CVE-2026-108903

pH7Builder before 19.3.0 CAPTCHA Bypass via Client-Chosen Form ID

ph7software ph7builder
Open in ThreatlineRecord JSON
CVSS
6.9Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.27%Chance of exploitation activity in the next 30 days, higher than 18% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in19.3.0Fixed versionCVE List
Published11 Oct 2026Updated 13 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

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.

Text from CVE List

Affected versions 2

  • ph7builderaffected: all versions before 19.3.0CVE List
  • ph7builderunaffected: 19.3.0CVE List

References 4