CVE-2026-42412 — WeDevs WP User Frontend Vulnerability
CVE-2026-42412 — Missing Authorization vulnerability in weDevs WP User Frontend allows Exploiting Incorrectly Configured Access Control Security Levels. This issue affects WP User Frontend: from n/a through 4.3.1.
What This Means For You
- If your environment is affected by CWE-862, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-42412 updates and patches.
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-2026-42412 - WP User Frontend Missing Authorization
Sigma YAML — free preview
title: CVE-2026-42412 - WP User Frontend Missing Authorization
id: scw-2026-04-29-ai-1
status: experimental
level: high
description: |
Detects attempts to exploit the CVE-2026-42412 vulnerability in WP User Frontend by targeting the admin-ajax.php endpoint with the 'wfu_frontend_upload' action, which is susceptible to missing authorization checks. A 200 status code indicates a successful request that bypassed authorization.
author: SCW Feed Engine (AI-generated)
date: 2026-04-29
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-42412/
tags:
- attack.initial_access
- attack.t1190
logsource:
category: webserver
detection:
selection:
cs-uri|contains:
- '/wp-admin/admin-ajax.php'
cs-uri-query|contains:
- 'action=wfu_frontend_upload'
sc-status:
- 200
condition: selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-42412 | vulnerability | CVE-2026-42412 |
| CWE-862 | weakness | CWE-862 |
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | April 29, 2026 at 12:16 UTC |
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