Auth bypass in Strategy11team Formidable Forms – Contact Form Plugin, Survey, Quiz, Payment, Calculator & Custom Builder
CVE-2026-2890
The Formidable Forms plugin for WordPress is vulnerable to a payment integrity bypass in all versions up to, and including, 6.28. This is due to the Stripe Link return handler (`handle_one_time_stripe_link_return_url`) marking payment reco…
Vulnerability class: Broken Access Control
EPSS: 0.001 (25.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
Affected products
Weakness classification (CWE)
References
- www.wordfence.com/threat-intel/vulnerabilities/id/ebb4bc5a-9469-4733-acf3-d2dda…
- plugins.trac.wordpress.org/browser/formidable/tags/6.28/stripe/controllers/FrmS…
- plugins.trac.wordpress.org/browser/formidable/tags/6.28/stripe/controllers/FrmS…
- plugins.trac.wordpress.org/browser/formidable/tags/6.28/stripe/controllers/FrmS…
Frequently asked questions
- What is CVE-2026-2890?
- CVE-2026-2890 is a high-severity vulnerability in Strategy11team Formidable Forms – Contact Form Plugin, Survey, Quiz, Payment, Calculator & Custom Builder, classified under Missing Authorization. CVSS score: 7.5/10. Published 2026-03-13.
- How severe is CVE-2026-2890?
- High severity. CVSS v3 base score is 7.5 out of 10.