CVE-2026-108903: medium-severity vulnerability in ph7software ph7builder
pH7Builder before 19.3.0 CAPTCHA Bypass via Client-Chosen Form ID
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.9epss 0.3%
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/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Affected products
ph7software · ph7builderRelated CVEs — ph7software ph7builder
In the same product, most dangerous first.
CVE-2026-108902HIGHpH7Builder before 18.5.0 Path Traversal Arbitrary File Deletion via picture_linkEPSS 0.4%CVE-2026-107638HIGHpH7Builder before 18.5.0 2FA Brute Force via VerificationCodeFormProcess.phpEPSS 0.4%CVE-2026-108904HIGHpH7Builder before 18.5.0 Sensitive Data Exposure via Member API UserControllerEPSS 0.3%CVE-2026-107636HIGHpH7Builder before 18.5.1 Payment Bypass via Payment Module MainControllerEPSS 0.3%CVE-2026-108905HIGHpH7Builder before 18.6.0 Hard-Coded API Key Bypass via Host HeaderEPSS 0.3%CVE-2026-107637MEDIUMpH7Builder before 18.5.0 Improper Authorization via Note Module delete() ActionEPSS 0.2%
References
https://github.com/pH7Software/pH7-Social-Dating-CMShttps://github.com/pH7Software/pH7-Social-Dating-CMS/blob/v19.2.0/_protected/app/system/modules/contact/forms/ContactForm.php#L33-L38https://github.com/pH7Software/pH7-Social-Dating-CMS/commit/4758d7d2ebfd5772faa25ef728c14f8f452e82f4https://www.vulncheck.com/advisories/ph7builder-before-19.3.0-captcha-bypass-via-client-chosen-form-id