CVE-2026-15288

HIGH

SureForms – Drag and Drop Form Builder for WordPress <= 2.2.1 - Unauthenticated Stripe Payment Amount Manipulation

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2026-15288. PoCs published by incogbyte.

AI-analyzed exploit summary This PoC exploits CVE-2026-15288, a missing authorization vulnerability in SureForms Drag & Drop Form Builder <= 2.2.1, allowing unauthenticated attackers to manipulate Stripe payment amounts by submitting arbitrary values via the `srfm_create_payment_intent` AJAX action. The exploit demonstrates the flaw by submitting mismatched amounts and analyzing the server's response to confirm the lack of validation against configured prices.

Description

The SureForms – Drag and Drop Form Builder for WordPress plugin for WordPress is vulnerable to Improper Input Validation in all versions up to, and including, 2.2.1. This is due to the plugin accepting the payment amount directly from user-controlled POST data in the 'create_payment_intent' and 'create_subscription_intent' functions without validating it against the form's configured price. This makes it possible for unauthenticated attackers to modify the payment amount to any arbitrary value when submitting a Stripe payment form, potentially purchasing products or services at significantly reduced prices.

Exploits (1)

github WORKING POC 4 stars
by incogbyte · pythonpoc
https://github.com/incogbyte/wp-cve-exploits/tree/main/CVE-2026-15288

This PoC exploits CVE-2026-15288, a missing authorization vulnerability in SureForms Drag & Drop Form Builder <= 2.2.1, allowing unauthenticated attackers to manipulate Stripe payment amounts by submitting arbitrary values via the `srfm_create_payment_intent` AJAX action. The exploit demonstrates the flaw by submitting mismatched amounts and analyzing the server's response to confirm the lack of validation against configured prices.

Classification
Working Poc 99%
Attack Type
Auth Bypass
Complexity
Moderate
Reliability
Reliable
Target: SureForms Drag & Drop Form Builder <= 2.2.1
No auth needed
Prerequisites: A SureForms form with a Stripe payment block configured for a fixed price · Valid `srfm_stripe_payment_nonce` value (extractable from a page rendering the payment block) · Form ID and block ID of the payment block
mistral-large-3 · analyzed Jul 18, 2026 Full analysis →

Scores

CVSS v3 7.5
EPSS 0.0034
EPSS Percentile 26.6%
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 – Drag & Drop Contact Form & Form Builder, Payment Form, Survey, Quiz & Calculator < 2.2.1
Published Jul 10, 2026
Tracked Since Jul 10, 2026