SureForms Pro Vulnerability CVE-2026-42377 Exposes Access Control Flaws
The National Vulnerability Database has identified CVE-2026-42377, a critical missing authorization vulnerability in Brainstorm Force SureForms Pro. This flaw, affecting versions up to 2.8.0, allows attackers to exploit incorrectly configured access control security levels. The CVSS score of 7.3 highlights the high severity of this issue, stemming from a CWE-862 (Inadequate Access Control) weakness.
This vulnerability presents a significant risk as it bypasses fundamental access controls, potentially allowing unauthorized users to access or manipulate data they should not. Given the nature of authorization flaws, successful exploitation could lead to data leakage, unauthorized modifications, or even system compromise depending on the specific configuration and privileges involved.
Defenders must prioritize patching SureForms Pro instances to version 2.8.0 or later immediately. For organizations unable to patch immediately, a thorough audit of access control configurations within SureForms Pro is essential. Reviewing user roles and permissions, and implementing stricter access policies can mitigate the risk of exploitation, especially in environments where access control is not robustly enforced.
What This Means For You
- If your organization uses Brainstorm Force SureForms Pro, check your version immediately. If you are running version 2.8.0 or earlier, patch to the latest version without delay. Until patched, review all access control configurations within the plugin to ensure no sensitive data or administrative functions are exposed to unauthorized users.
Related ATT&CK Techniques
🛡️ Detection Rules
2 rules · 6 SIEM formats2 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
CVE-2026-42377 - SureForms Pro Unauthorized Access Attempt
title: CVE-2026-42377 - SureForms Pro Unauthorized Access Attempt
id: scw-2026-04-29-ai-1
status: experimental
level: high
description: |
This rule detects attempts to exploit the SureForms Pro vulnerability (CVE-2026-42377) by targeting the admin-ajax.php endpoint with a specific action parameter indicative of the vulnerable function. This bypasses access controls, allowing unauthorized form processing.
author: SCW Feed Engine (AI-generated)
date: 2026-04-29
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-42377/
tags:
- attack.initial_access
- attack.t1190
logsource:
category: webserver
detection:
selection:
cs-uri|contains:
- '/wp-admin/admin-ajax.php'
cs-uri-query|contains:
- 'action=sureforms_process_form'
cs-method|exact:
- 'POST'
condition: selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-42377 | Auth Bypass | Brainstorm Force SureForms Pro versions n/a through 2.8.0 |
| CVE-2026-42377 | Misconfiguration | Incorrectly Configured Access Control Security Levels in SureForms Pro |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | April 29, 2026 at 11:16 UTC |
This content was AI-rewritten and enriched by Shimi's Cyber World based on the original source. All intellectual property rights remain with the original author.
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