CVE-2026-9815: CWE-434 Unrestricted Upload of File with Dangerous Type in MagicForm
The MagicForm WordPress plugin through 0.1.3 does not properly validate the type of files uploaded through an unauthenticated AJAX action when a form's per-field extension allowlist is left empty, allowing unauthenticated attackers to upload PHP files and execute arbitrary code on the server.
AI Analysis
Technical Summary
CVE-2026-9815 is a vulnerability in the MagicForm WordPress plugin (through version 0.1.3) where the plugin fails to properly validate file types uploaded via an unauthenticated AJAX action when the per-field extension allowlist is empty. This improper validation allows attackers to upload PHP files, potentially leading to remote code execution on the affected server. The vulnerability is categorized under CWE-434 (Unrestricted Upload of File with Dangerous Type). No CVSS score or official remediation details are currently available.
Potential Impact
An unauthenticated attacker can upload malicious PHP files to the server via the vulnerable upload functionality, leading to arbitrary code execution. This can compromise the server hosting the WordPress site, potentially allowing full control over the affected system.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, administrators should ensure that the per-field extension allowlist is not left empty and restrict file uploads to safe types only. Additionally, disabling or restricting the vulnerable AJAX upload functionality may reduce exposure.
CVE-2026-9815: CWE-434 Unrestricted Upload of File with Dangerous Type in MagicForm
Description
The MagicForm WordPress plugin through 0.1.3 does not properly validate the type of files uploaded through an unauthenticated AJAX action when a form's per-field extension allowlist is left empty, allowing unauthenticated attackers to upload PHP files and execute arbitrary code on the server.
CVSS v3.1
Score 6.5medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-9815 is a vulnerability in the MagicForm WordPress plugin (through version 0.1.3) where the plugin fails to properly validate file types uploaded via an unauthenticated AJAX action when the per-field extension allowlist is empty. This improper validation allows attackers to upload PHP files, potentially leading to remote code execution on the affected server. The vulnerability is categorized under CWE-434 (Unrestricted Upload of File with Dangerous Type). No CVSS score or official remediation details are currently available.
Potential Impact
An unauthenticated attacker can upload malicious PHP files to the server via the vulnerable upload functionality, leading to arbitrary code execution. This can compromise the server hosting the WordPress site, potentially allowing full control over the affected system.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, administrators should ensure that the per-field extension allowlist is not left empty and restrict file uploads to safe types only. Additionally, disabling or restricting the vulnerable AJAX upload functionality may reduce exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-05-28T09:50:03.864Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a339fe1f198dc38c15adc8d
Added to database: 06/18/2026, 07:36:01 UTC
Last enriched: 06/18/2026, 07:50:06 UTC
Last updated: 08/01/2026, 07:18:02 UTC
Views: 75
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