CVE-2026-2890 details a high-severity payment integrity bypass vulnerability in the Formidable Forms plugin for WordPress, affecting all versions up to and including 6.28. This flaw allows unauthenticated attackers to reuse a low-value Stripe PaymentIntent to mark a high-value payment as complete, effectively bypassing payment for goods or services. The vulnerability stems from the plugin's Stripe Link return handler marking payments complete based solely on PaymentIntent status without verifying the charged amount or binding intents to specific forms. With a CVSS score of 7.5 (High), it is easily exploitable over the network without requiring privileges or user interaction, leading to a high impact on integrity. There is currently no evidence of active exploitation, public exploit code, or significant community attention for this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
| Strategy11team | Formidable Forms – Contact Form Plugin, Survey, Quiz, Payment, Calculator Form & Custom Form Builder | >= 0, <= 6.28CNA affecteddefault unaffected |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.