CVE-2026-111114
Received Received - Intake

Privilege Escalation in Nexter Extension WordPress Plugin

Publication date: 2026-10-16

Last updated on: 2026-10-16

Assigner: Wordfence

Description
The Nexter Extension – Security, Performance, Code Snippets & Site Toolkit plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 4.7.11 The vulnerability exists because the `/?reset-view` handler in `role_switcher_to_view_admin_as()` performs no nonce or capability check when the supplied username matches the authenticated caller, and because the plugin's only cleanup mechanism — the `profile_update` hook — does not fire when WordPress performs a bulk role change via `wp-admin/users.php?action=promote`, which calls `WP_User::set_role()` directly and leaves a stale `administrator` value in the `nxtext_view_admin_original_role` user meta. This makes it possible for authenticated attackers with Subscriber-level access or above to restore the stale stored Administrator role to their own account, effectively escalating their privileges to Administrator. Exploitation requires that the attacker's account previously held the Administrator role and used the View Admin Role Switcher feature before being demoted specifically through the bulk role-change control rather than the Edit User screen, as only the bulk path bypasses the `profile_update` hook that would otherwise have cleared the stored original role.

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Meta Information

Published
2026-10-16
Last Modified
2026-10-16
Generated
2026-10-16
AI Q&A
2026-10-16
EPSS Evaluated
N/A
NVD
CVE-2026-111114
EUVD
EUVD-2026-102648

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
posimyththemes Nexter Extension – Security, Performance, Code Snippets & Site Toolkit 0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-269 The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

Attack-Flow Graph

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Executive Summary

This vulnerability is a privilege escalation flaw in the Nexter Extension WordPress plugin. It allows authenticated users with Subscriber-level access or higher to regain Administrator privileges if they previously had them. The issue occurs because the plugin fails to properly clean up role-switching metadata when users are demoted via bulk actions, leaving a stale Administrator role reference that attackers can exploit.

Detection Guidance

Check for users with the nxtext_view_admin_original_role user meta set to administrator. Inspect WordPress user roles via wp-admin/users.php or database queries. Look for accounts that previously had admin privileges but were demoted via bulk role changes.

Impact Analysis

If you use this plugin, an attacker with basic access could escalate their privileges to Administrator. This could allow them to take full control of your WordPress site, install malicious plugins, steal data, or deface your website. The attack requires the attacker to have previously held Admin rights and used the plugin's role-switching feature.

Compliance Impact

This vulnerability could lead to unauthorized access and data breaches, violating compliance requirements for GDPR (data protection) and HIPAA (health information security). Unauthorized privilege escalation may result in unauthorized data exposure, access, or modification, triggering regulatory penalties and legal consequences.

Mitigation Strategies

Update the Nexter Extension plugin to the latest version beyond 4.7.11. Remove the nxtext_view_admin_original_role user meta for all users. Audit user roles and demote any unauthorized admin accounts. Disable the View Admin Role Switcher feature if not needed.

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