How severe is CVE-2026-4987?

High severity. CVSS v3 base score is 7.5 out of 10.

Improper input validation in Brainstormforce Sureforms – Contact Form, Payment Form & Other Custom Builder

CVE-2026-4987

The SureForms – Contact Form, Payment Form & Other Custom Form Builder plugin for WordPress is vulnerable to Payment Amount Bypass in all versions up to, and including, 2.5.2. This is due to the create_payment_intent() function performing…

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.001 (34.4th 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

Brainstormforce Sureforms – Contact Form, Payment Form & Other Custom Builder — versions 0

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

Frequently asked questions

What is CVE-2026-4987?: CVE-2026-4987 is a high-severity vulnerability in Brainstormforce Sureforms – Contact Form, Payment Form & Other Custom Builder, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2026-03-28.
How severe is CVE-2026-4987?: High severity. CVSS v3 base score is 7.5 out of 10.