CVE-2026-4987

HIGH

SureForms <= 2.5.2 - Unauthenticated Payment Amount Validation Bypass via 'form_id'

Title source: cna
STIX 2.1

Description

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 a payment validation solely based on the value of a user-controlled parameter. This makes it possible for unauthenticated attackers to bypass configured form payment-amount validation and create underpriced payment/subscription intents by setting form_id to 0.

References (2)

Scores

CVSS v3 7.5
EPSS 0.0012
EPSS Percentile 31.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-20
Status published
Products (1)
brainstormforce/SureForms – Contact Form, Payment Form & Other Custom Form Builder < 2.5.2
Published Mar 28, 2026
Tracked Since Mar 29, 2026