AUGUST 14, 2026
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Case File

CVE-2026-12949

CRITICAL · CVSS 9.8

Source: NVD + CISA KEV + EPSS · Published 2026-08-14 · Last synced 2026-08-14

CyberRota Analysis

AI-Generated

The Wishlist Member plugin for WordPress is critically vulnerable, allowing unauthenticated attackers to perform account takeovers by exploiting insufficient verification in the registration process. By manipulating specific POST parameters, attackers can overwrite user account details, including those of administrators, without triggering any notification mechanisms. WordPress site administrators using this plugin should prioritize immediate updates to versions beyond 3.34.1 to mitigate this severe security risk.

CVE
CVE-2026-12949
Severity
CRITICAL
CVSS
9.8
EPSS
N/A
WordPress

Original NVD Description

The Wishlist Member plugin for WordPress is vulnerable to Account Takeover via Insufficient Verification of Data Authenticity in versions up to and including 3.34.1. This is due to the wpm_register() function validating the registration cookie only against the GET reg parameter while accepting the POST mergewith and POST wpm_id parameters without verifying that the mergewith user ID references a temporary or incomplete registrant that is bound to the current registration transaction. This makes it possible for unauthenticated attackers to take over any existing WordPress account — including administrator accounts — by supplying an arbitrary user's numeric ID as the mergewith value, which causes wp_update_user() to overwrite the target account's username (additionally written via a direct $wpdb UPDATE), password, email address, first name, and last name with attacker-controlled values, while WordPress password and email change notification emails are explicitly suppressed. When wpm_id references a non-existent membership level, no role key is added to the update payload, causing wp_update_user() to preserve the target user's existing role — including administrator — making full privilege escalation a direct consequence of the takeover.