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CVE-2026-3688— WCFM - WooCommerce Multivendor Membership <= 2.11.10 - Insecure Direct Object Reference to Limited Privilege Escalation via User Role Overwrite

Quick assessment

Affected
wclovers WCFM Membership – WooCommerce Memberships for Multivendor Marketplace
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WC Lovers WCFM Membership是WC Lovers的CMS插件。 WCFM Membership – WooCommerce Memberships for Multivendor Marketplace 2.11.10及之前版本存在授权问题漏洞，该漏洞源于'wcfmvm_membership_change' AJAX操作未验证用户修改其他用户的权限，可能导致已认证的攻击者通过更改成员计划将任何用户角色更改为'wcfm_vendor'。

CVSS 8.1 · High EPSS 0.40% · P32

Possible ATT&CK Techniques 1 AI

T1136 · Create Account

Affected Version Matrix 1

VendorProduct Version RangeStatus
wclovers WCFM Membership – WooCommerce Memberships for Multivendor Marketplace ≤ 2.11.10 affected
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I. Basic Information for CVE-2026-3688

Vulnerability Information
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Vulnerability Title
WCFM - WooCommerce Multivendor Membership <= 2.11.10 - Insecure Direct Object Reference to Limited Privilege Escalation via User Role Overwrite
Source: CVE Program / CVE List V5
Vulnerability Description
The WCFM Membership – WooCommerce Memberships for Multivendor Marketplace plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 2.11.10. This is due to the 'wcfmvm_membership_change' AJAX action not validating user permission to modify other users. This makes it possible for authenticated attackers, with vendor level access and above, to change any user's role to 'wcfm_vendor' by changing their membership plan.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Vulnerability Title
WC Lovers WCFM Membership 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WC Lovers WCFM Membership是WC Lovers的CMS插件。 WCFM Membership – WooCommerce Memberships for Multivendor Marketplace 2.11.10及之前版本存在授权问题漏洞，该漏洞源于'wcfmvm_membership_change' AJAX操作未验证用户修改其他用户的权限，可能导致已认证的攻击者通过更改成员计划将任何用户角色更改为'wcfm_vendor'。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
wclovers WCFM Membership – WooCommerce Memberships for Multivendor Marketplace 0 ~ 2.11.10 -

II. Public POCs for CVE-2026-3688

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III. Intelligence Information for CVE-2026-3688

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Vendor Advisories for CVE-2026-3688 (1)

IV. Related Vulnerabilities

Same product: WCFM Membership – WooCommerce Memberships for Multivendor Marketplace
Same vendor: wclovers
Same weakness: CWE-639

V. Comments for CVE-2026-3688

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