CVE-2026-5076

ARMember Premium <= 7.3.1 - Insecure Password Reset Mechanism to Unauthenticated Privilege Escalation

2026-06-02 05:30
h0xilo

Strategic Overview

Status
Patched in 7.3.2
Affected Plugin
ARMember Premium – Membership Plugin, Content Restriction, Member Levels, User Profile & User signup
Affected Version
<= 7.3.1
CVSS
9.8Critical
Weakness type
CWE-287 · Improper Authentication
CVE
CVE-2026-5076
View all ARMember Premium – Membership Plugin, Content Restriction, Member Levels, User Profile & User signup vulnerabilities

At a glance

CVE-2026-5076 is a critical-severity Improper Authentication vulnerability in the ARMember Premium WordPress plugin, affecting versions <= 7.3.1. It carries a CVSS score of 9.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires no authentication. The issue is fixed in version 7.3.2; sites on affected versions should update now. Disclosed June 2026, reported by h0xilo.

Vulnerability Overview

The ARMember Premium plugin for WordPress is vulnerable to an insecure password reset mechanism in all versions up to, and including, 7.3.1. The plugin stores a plaintext copy of the password reset key in the `arm_reset_password_key` user meta field when a user requests a password reset. This is in addition to the hashed key that WordPress core stores securely in `wp_users.user_activation_key`. The plaintext key stored in `wp_usermeta` can be used with the plugin's custom `armrp` reset action to set a new password for any user. Combined with another vulnerability such as SQL Injection (CVE-2026-5073, CVE-2026-5074), this makes it possible for unauthenticated attackers to extract the plaintext reset key and take over any user account, including administrators.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.

CWE-287: Improper Authentication

Reaching this weakness in ARMember Premium <= 7.3.1 takes no account at all. Improper authentication means the mechanism that proves who a caller is can be satisfied without the secret it was supposed to require.

An attacker authenticates as another user — administrators included — without ever knowing a password, so password policies and login rate limits never come into play. For ARMember Premium the fix is 7.3.2: builds <= 7.3.1 are affected, anything from 7.3.2 onward is not.

Remediation

Update to version 7.3.2, or a newer patched version

How does WordSec protect against this?

This one needs no account at all, which puts it outside what login hardening can reach; WordSec's login security narrows the account-level paths around it, and the firewall is what inspects the request itself. None of that substitutes for the fix: ARMember Premium 7.3.2 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-5076https://www.wordfence.com/threat-intel/vulnerabilities/id/6b15eca5-fd47-4f8f-8ade-3a90e0bfc110https://nvd.nist.gov/vuln/detail/CVE-2026-5076

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C