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CVE-2026-104767— Membership & User Roles for WooCommerce (Automatic Role Changer) <= 20260828 - Authenticated (Subscriber+) Privilege Escalation to Stale Foreign Role Cache

Quick assessment

Affected
davefx Membership & User Roles for WooCommerce (Automatic Role Changer)
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.

WordPress 的 WooCommerce 插件“Membership & User Roles for WooCommerce (Automatic Role Changer)”在版本 20260828 及更早版本中存在权限提升漏洞。该漏洞源于 函数在无需验证的情况下，无条件地将存储在用户元数据缓存 中的每一个角色重新分配给用户，而未检查这些缓存中的角色是否仍被外部提供商有效分配。此外， 函数会将新的外部角色合并到缓存中，但从未移除已被撤销的角色，从而使上述问题成为永久性隐患。 这一漏洞使得拥有订阅者及以上权

CVSS 7.5 · High EPSS 0.34% · P26

Affected Version Matrix 1

VendorProduct Version RangeStatus
davefx Membership & User Roles for WooCommerce (Automatic Role Changer) ≤ 20260828 affected
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I. Basic Information for CVE-2026-104767

Vulnerability Information
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Vulnerability Title
Membership & User Roles for WooCommerce (Automatic Role Changer) <= 20260828 - Authenticated (Subscriber+) Privilege Escalation to Stale Foreign Role Cache
Source: CVE Program / CVE List V5
Vulnerability Description
The Membership & User Roles for WooCommerce (Automatic Role Changer) plugin for WordPress is vulnerable to Privilege Escalation in versions up to, and including, 20260828. This is due to the `maybe_add_role_to_user()` function unconditionally re-assigning every role stored in the `dfxwcrc_foreign_roles` user meta cache without verifying that each cached role is still actively assigned by the external provider — a condition made permanent by `remember_foreign_roles()`, which merges new foreign roles into the cache but never evicts roles that have since been revoked. This makes it possible for authenticated attackers with subscriber-level access and above to restore a previously revoked Administrator role to their own account, gaining full administrative control of the site, by triggering any role-assignment event such as completing a purchase for a role-mapped product. Exploitation requires Replace Roles mode to be enabled and the attacker's account to have previously received Administrator legitimately through a separate role-management mechanism while the plugin was active, so that `administrator` was written into the `dfxwcrc_foreign_roles` user meta cache before the external provider revoked it.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
特权管理不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
davefx Membership & User Roles for WooCommerce (Automatic Role Changer) 0 ~ 20260828 -

II. Public POCs for CVE-2026-104767

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III. Intelligence Information for CVE-2026-104767

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Other References for CVE-2026-104767 (2)

IV. Related Vulnerabilities

Same weakness: CWE-269

V. Comments for CVE-2026-104767

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