What is the CVSS score of EUVD-2026-37667?

EUVD-2026-37667 has a CVSS 3.1 base score of 9.9 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H. EPSS exploitation probability: 0.4%.

Which versions of WishList Member X are affected by EUVD-2026-37667?

WishList Member X WordPress plugin (versions 3.29.0 and earlier) contains a critical arbitrary file upload vulnerability that could allow attackers to fully compromise affected WordPress…

How to fix or mitigate EUVD-2026-37667?

Within 24 hours: Audit all WordPress installations to identify WishList Member X plugin versions 3.29.0 and earlier; prioritize systems with user registration enabled. Within 7 days: Implement compensating controls-disable public user registration if not operationally critical, restrict file upload capabilities via WordPress role management, or disable the plugin entirely pending patch release. Within 30 days: Monitor Patchstack security advisories and vendor communications for patch release; establish upgrade plan for immediate deployment once vendor releases fixed version.

WishList Member X EUVD-2026-37667

| CVE-2026-25446 CRITICAL

Unrestricted Upload of File with Dangerous Type (CWE-434)

2026-06-17 Patchstack

File Upload Wishlist Member X

9.9

CVSS 3.1 · Vendor: Patchstack

Severity by source

Vendor (Patchstack) PRIMARY

9.9 CRITICAL

AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

vuln.today AI

9.9 CRITICAL

Network-reachable upload endpoint exploitable by any subscriber (PR:L per description), no user interaction, webshell escapes plugin scope to compromise host (S:C) with full CIA impact.

3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Primary rating from Vendor (Patchstack).

CVSS VectorVendor: Patchstack

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Jun 17, 2026 - 12:26 vuln.today

DescriptionCVE.org

Subscriber Arbitrary File Upload in WishList Member X <= 3.29.0 versions.

AnalysisAI

Arbitrary file upload in the WishList Member X WordPress plugin versions 3.29.0 and earlier allows authenticated subscriber-level users to upload malicious files, with a CVSS 9.9 score reflecting scope change and full confidentiality, integrity, and availability impact. No public exploit identified at time of analysis, though the low privilege requirement (subscriber is the lowest authenticated WordPress role) makes this trivially reachable on any site permitting user registration. The vulnerability was disclosed via Patchstack and is classified under CWE-434 (Unrestricted Upload of File with Dangerous Type).

Technical ContextAI

WishList Member X is a commercial WordPress membership plugin developed by WishList Products LLC, used to gate site content behind subscription tiers. The flaw falls under CWE-434, meaning the plugin accepts file uploads from authenticated users without sufficiently validating the file type, extension, or content - allowing files such as PHP webshells to be placed in a web-accessible location. Because WordPress executes PHP files served from the uploads directory or plugin directory under the web server user, a successful upload typically translates directly to remote code execution under the PHP-FPM/Apache/Nginx worker context. The CPE confirms the affected product is cpe:2.3:a:wishlist_products,_llc.:wishlist_member_x with all versions through 3.29.0 in scope.

RemediationAI

No vendor-released patch version is identified in the available data; administrators should consult the Patchstack advisory at https://patchstack.com/database/wordpress/plugin/wishlist-member-x/vulnerability/wordpress-wishlist-member-x-plugin-3-29-0-arbitrary-file-upload-vulnerability and upgrade to any version released after 3.29.0 once published by WishList Products. As compensating controls until a fixed release is installed, disable new user registration in WordPress Settings → General (trade-off: blocks legitimate subscriber signups, breaking the plugin's core business function), deactivate the WishList Member X plugin entirely if subscription functionality can be paused, restrict access to the plugin's upload endpoint via web-server rules or a WAF virtual patch (Patchstack offers one for this CVE), and configure the web server to deny execution of PHP files within wp-content/uploads using directory-level handler restrictions (trade-off: may break other plugins that legitimately serve PHP from uploads paths).