CVE-2025-12535

SureForms <= 1.13.1 - Cross-Site Request Forgery Protection Bypass via Improper Nonce Distribution

2025-11-18 17:53

Strategic Overview

Status: Patched in 1.13.2
Affected Plugin: SureForms – Contact Form Builder, AI Forms, Payment Form, Survey & Quiz
Affected Version: <= 1.13.1
CVSS: 5.3Medium
Weakness type: CWE-352 · Cross-Site Request Forgery (CSRF)
CVE: CVE-2025-12535

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

At a glance

CVE-2025-12535 is a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the SureForms WordPress plugin, affecting versions <= 1.13.1. 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 1.13.2; sites on affected versions should update now. Disclosed November 2025, reported by type5afe.

Vulnerability Overview

The SureForms plugin for WordPress is vulnerable to Cross-Site Request Forgery Bypass in all versions up to, and including, 1.13.1. This is due to the plugin distributing generic WordPress REST API nonces (wp_rest) to unauthenticated users via the 'wp_ajax_nopriv_rest-nonce' action. While the plugin legitimately needs to support unauthenticated form submissions, it incorrectly uses generic REST nonces instead of form-specific nonces. This makes it possible for unauthenticated attackers to bypass CSRF protection on REST API endpoints that rely solely on nonce verification without additional authentication checks, allowing them to trigger unauthorized actions such as the plugin's own post-submission hooks and potentially other plugins' REST endpoints.

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-352: Cross-Site Request Forgery (CSRF)

SureForms <= 1.13.1 carries this weakness at wp_ajax_nopriv_rest-nonce, and reaching it takes a caller who can reach the endpoint. Cross-site request forgery abuses the fact that browsers attach a victim's cookies to any request, so a state-changing action that only checks who you are, not whether you meant to act, can be triggered from another site.

An attacker who gets a logged-in user to load a crafted page can perform that action as them, with the impact scaling to whatever the victim's role is allowed to do. For SureForms the fix is 1.13.2: builds <= 1.13.1 are affected, anything from 1.13.2 onward is not.

Remediation

Update to version 1.13.2, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to SureForms: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: SureForms 1.13.2 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2025-12535 https://www.wordfence.com/threat-intel/vulnerabilities/id/b083cf9d-bcfe-4234-a816-2d216da28b57 https://nvd.nist.gov/vuln/detail/CVE-2025-12535

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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