EUVD-2026-37852
GHSA-v7h3-h25c-vhc5
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Unauthenticated network RCE with no interaction; server-side PHP execution extends compromise beyond the plugin scope, justifying S:C and C:H/I:H/A:H.
Primary rating from Vendor (WPScan).
CVSS VectorVendor: WPScan
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Lifecycle Timeline
4DescriptionCVE.org
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.
AnalysisAI
Unrestricted PHP file upload in the MagicForm WordPress plugin (through version 0.1.3) enables unauthenticated remote code execution on any WordPress server running an affected installation whose form fields have an empty extension allowlist. The vulnerability is reachable via an unauthenticated AJAX endpoint, requires no privileges or user interaction, and a publicly available proof-of-concept exploit exists per WPScan. Despite the plugin's limited adoption, the combination of a public exploit, zero authentication requirement, and full server-side code execution makes this a materially higher-risk issue than the vendor-assigned CVSS score of 6.5 suggests.
Technical ContextAI
MagicForm is a WordPress plugin (CPE: cpe:2.3:a:unknown:magicform:*:*:*:*:*:*:*:*) that provides front-end form functionality, including file upload capabilities exposed via WordPress's AJAX infrastructure (wp-admin/admin-ajax.php). The root-cause weakness is a missing or bypassable file-type validation routine: when a form's per-field extension allowlist is left empty, the plugin applies no server-side restriction on uploaded file extensions. This allows an attacker to submit a PHP script disguised as a legitimate file upload. Once the PHP file lands in a web-accessible directory on the server, it can be directly requested and executed by the web server process. The CWE is not formally assigned in the available data, but this maps to CWE-434 (Unrestricted Upload of File with Dangerous Type), a well-understood root cause class. The vulnerability is reported by WPScan and tracked as EUVD-2026-37852.
RemediationAI
No vendor-released patched version has been confirmed in the available data - the affected range is listed as 'through 0.1.3' with no successor version identified in references. Organizations should immediately deactivate and remove the MagicForm plugin from all WordPress installations until a confirmed patched version is available and verified. As a compensating control, administrators who cannot remove the plugin should ensure that all forms have an explicit non-empty extension allowlist configured for every file upload field, which directly addresses the bypass condition described. Additionally, the web server's document root or upload directory should be configured to deny direct PHP execution (e.g., via .htaccess deny-execute rules on /wp-content/uploads/), which limits post-upload code execution even if a malicious file is uploaded - note this may break legitimate PHP-dependent upload workflows. Network-layer controls restricting access to wp-admin/admin-ajax.php to trusted IP ranges can reduce attack surface but are operationally disruptive on public-facing sites. Monitor WPScan at https://wpscan.com/vulnerability/043f449f-fc65-4218-83d2-7742e62f2af3/ for patch availability updates.
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External POC / Exploit Code
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