CVE-2026-108903

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.

CVSS 4.0

6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS

0.3% chance of exploitation in the next 30 days; higher than 19% of CVEs (scores of 2026-10-25)

CWE

CWE-807

Published

2026-10-11

Modified

2026-10-13

Record from

the NVD, synced 2026-10-19

References

• https://github.com/pH7Software/pH7-Social-Dating-CMS
• https://github.com/pH7Software/pH7-Social-Dating-CMS/blob/v19.2.0/_protected/app/system/modules/contact/forms/ContactForm.php#L33-L38
• https://github.com/pH7Software/pH7-Social-Dating-CMS/commit/4758d7d2ebfd5772faa25ef728c14f8f452e82f4
• https://www.vulncheck.com/advisories/ph7builder-before-19.3.0-captcha-bypass-via-client-chosen-form-id

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