Auth bypass in Strategy11team Formidable Forms – Contact Form Plugin, Survey, Quiz, Payment, Calculator & Custom Builder
CVE-2026-2888
The Formidable Forms plugin for WordPress is vulnerable to an authorization bypass through user-controlled key in all versions up to, and including, 6.28. This is due to the `frm_strp_amount` AJAX handler (`update_intent_ajax`) overwriting…
Vulnerability class: IDOR (Insecure Direct Object Reference)
EPSS: 0.000 (7.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
Affected products
Weakness classification (CWE)
References
- www.wordfence.com/threat-intel/vulnerabilities/id/b8be3b6e-a035-4e6f-ba2b-ce9e5…
- plugins.trac.wordpress.org/browser/formidable/tags/6.28/stripe/models/FrmStrpLi…
- plugins.trac.wordpress.org/browser/formidable/tags/6.28/stripe/models/FrmStrpLi…
- plugins.trac.wordpress.org/browser/formidable/tags/6.28/stripe/controllers/FrmS…
- plugins.trac.wordpress.org/changeset
Frequently asked questions
- What is CVE-2026-2888?
- CVE-2026-2888 is a medium-severity vulnerability in Strategy11team Formidable Forms – Contact Form Plugin, Survey, Quiz, Payment, Calculator & Custom Builder, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.3/10. Published 2026-03-13.
- How severe is CVE-2026-2888?
- Medium severity. CVSS v3 base score is 5.3 out of 10.