CVE-2026-4987

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

HIGH
7.5
CVSS Score
Published: March 28, 2026 at 01:25 AM UTC
Updated: June 17, 2026 at 10:57 AM UTC
1 product affected across 1 vendorSureForms

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Severity
HIGH7.5
Exploit prediction
EPSS 1.0%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

60%
v ≤ 2.5.2

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHWordfence
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-20

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