Executive Summary

The ARMember Premium plugin for WordPress has a vulnerability in its password reset mechanism in all versions up to and including 7.3.1. When a user requests a password reset, the plugin stores a plaintext copy of the password reset key in the user meta field named `arm_reset_password_key`. This is insecure because WordPress core only stores a hashed version of this key securely.

An attacker can use this plaintext reset key with the plugin's custom reset action called `armrp` to set a new password for any user. If combined with other vulnerabilities like SQL Injection (CVE-2026-5073, CVE-2026-5074), an unauthenticated attacker could extract this plaintext reset key and take over any user account, including administrator accounts.

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Impact Analysis

This vulnerability can have severe impacts as it allows attackers to take over any user account on a WordPress site using the ARMember Premium plugin, including administrator accounts.

• Unauthorized account takeover
• Loss of control over website administration
• Potential data breaches or unauthorized changes to site content
• Complete compromise of the website's security and integrity

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Detection Guidance

This vulnerability involves the ARMember Premium plugin storing a plaintext password reset key in the user meta field `arm_reset_password_key`. To detect this vulnerability on your system, you can check the WordPress database for the presence of this plaintext reset key in the `wp_usermeta` table.

• Run a SQL query on your WordPress database to find entries in the `wp_usermeta` table where the meta_key is `arm_reset_password_key` and the meta_value is not empty.
• Example SQL command: SELECT user_id, meta_value FROM wp_usermeta WHERE meta_key = 'arm_reset_password_key' AND meta_value != '';

If you find plaintext reset keys stored, it indicates the presence of the vulnerable plugin version and potential exploitation risk.

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Mitigation Strategies

To mitigate this vulnerability, you should immediately update the ARMember Premium plugin to a version later than 7.3.1 where this issue is fixed.

Additionally, consider the following steps:

• Audit and remove any plaintext password reset keys stored in the `arm_reset_password_key` user meta field in your WordPress database.
• Force password resets for all users to invalidate any potentially compromised reset keys.
• Review and patch any other related vulnerabilities such as SQL Injection issues (CVE-2026-5073, CVE-2026-5074) that could be combined to exploit this vulnerability.

Implement monitoring for suspicious password reset activities and restrict access to the reset functionality where possible.

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Compliance Impact

The vulnerability in the ARMember Premium plugin involves storing a plaintext copy of the password reset key in the user meta field, which can be exploited to take over user accounts, including administrators.

This insecure handling of sensitive authentication data can lead to unauthorized access and potential data breaches, which may violate data protection requirements under regulations such as GDPR and HIPAA.

Specifically, GDPR requires appropriate technical measures to protect personal data, including secure authentication mechanisms, and HIPAA mandates safeguards to ensure the confidentiality and integrity of electronic protected health information.

Therefore, this vulnerability could negatively impact compliance with these standards by exposing sensitive user credentials and enabling unauthorized account access.

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