CVE-2026-11567

SureForms <= 2.11.0 - Unauthenticated Payment Amount Bypass

2026-06-23 00:00

Strategic Overview

Status: Patched in 2.11.1
Affected Plugin: SureForms – Contact Form Builder, AI Forms, Payment Form, Survey & Quiz
Affected Version: <= 2.11.0
CVSS: 5.3Medium
Weakness type: CWE-284 · Improper Access Control
CVE: CVE-2026-11567

View all SureForms – Contact Form Builder, AI Forms, Payment Form, Survey & Quiz vulnerabilities

At a glance

CVE-2026-11567 is a medium-severity Improper Access Control vulnerability in the SureForms WordPress plugin, affecting versions <= 2.11.0. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 2.11.1; sites on affected versions should update now. Disclosed June 2026, reported by Yaswanth Reddy Sunkara.

Vulnerability Overview

The SureForms – Contact Form Builder, AI Forms, Payment Form, Survey & Quiz plugin for WordPress is vulnerable to Payment Amount Bypass in all versions up to, and including, 2.11.0. This makes it possible for unauthenticated attackers to pay less than is intended.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user.

CWE-284: Improper Access Control

Reaching this weakness in SureForms <= 2.11.0 takes no account at all. Improper access control means the code decides what a caller may do using something other than their actual permissions, so the decision can be wrong without any check appearing to be missing.

Whoever can shape the request decides the answer, so the protected action runs for callers the code never meant to allow. For SureForms the fix is 2.11.1: builds <= 2.11.0 are affected, anything from 2.11.1 onward is not.

Remediation

Update to version 2.11.1, or a newer patched version

How does WordSec protect against this?

This one needs no account at all, which puts it outside what login hardening can reach; WordSec's login security narrows the account-level paths around it, and the firewall is what inspects the request itself. None of that substitutes for the fix: SureForms 2.11.1 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-11567 https://www.wordfence.com/threat-intel/vulnerabilities/id/2f2ab0ba-6212-4466-835f-763ea01336b9 https://nvd.nist.gov/vuln/detail/CVE-2026-11567

Related records

Other vulnerabilities in SureForms – Contact Form Builder, AI Forms, Payment Form, Survey & Quiz

CVSS Vector

5.3

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityNone

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