CVE-2026-108903 PUBLISHED

pH7Builder before 19.3.0 CAPTCHA Bypass via Client-Chosen Form ID

Assigner: VulnCheck
Reserved: 11.10.2026 Published: 11.10.2026 Updated: 11.10.2026

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 Vector: CVSS: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 Score: 6.9

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	Low	Integrity	None
Attack Requirements	None	Availability	None	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

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

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	None	Integrity Impact	Low
User Interaction	None	Availability Impact	None

CVSS 3.1

Product Status

Vendor	ph7software
Product	ph7builder
Versions	Default: unaffected affected from 0 to 19.3.0 (excl.) Version 19.3.0 is unaffected

CVE-2026-108903 PUBLISHED

pH7Builder before 19.3.0 CAPTCHA Bypass via Client-Chosen Form ID

Metrics

Product Status

Credits

References

Problem Types