CVE-2026-9701: Eventer WordPress Auth Bypass Vulnerability

CVE-2026-9701 Overview

CVE-2026-9701 is an authentication bypass vulnerability in the Eventer plugin for WordPress affecting all versions up to and including 4.4.2. The plugin stores a plaintext copy of the password reset key in the eventer_verification_code user meta field when a user requests a password reset. Attackers who can read the wp_usermeta table can use the plaintext key with the plugin's custom reset action to set a new password for any user account. When chained with a companion SQL Injection flaw tracked as CVE-2026-9700, unauthenticated attackers can extract the reset key and take over administrator accounts. The reset function only operates on sites running PHP version 7.4 or lower.

Critical Impact
Unauthenticated attackers can achieve full administrator account takeover on affected WordPress sites by chaining CVE-2026-9701 with SQL Injection (CVE-2026-9700).

Affected Products

Eventer WordPress Event Manager Plugin — all versions up to and including 4.4.2
WordPress installations running PHP version 7.4 or lower
Sites where the Eventer plugin's custom password reset action is enabled

Discovery Timeline

2026-07-08 - CVE-2026-9701 published to the National Vulnerability Database (NVD)
2026-07-08 - Last updated in NVD database

Technical Details for CVE-2026-9701

Vulnerability Analysis

The vulnerability falls under [CWE-289] Authentication Bypass by Alternate Name, resulting from improper handling of password reset credentials. The Eventer plugin implements a custom password reset workflow separate from the standard WordPress mechanism. When a user requests a password reset, the plugin generates a verification code and writes it in plaintext to the eventer_verification_code field within the wp_usermeta table.

WordPress core normally stores password reset keys as hashed values, ensuring that database read access alone cannot compromise accounts. The Eventer plugin bypasses this protection by persisting the reset token in a directly readable form. Any attacker who can query wp_usermeta can invoke the plugin's reset action with the retrieved token to set an arbitrary new password.

Root Cause

The root cause is the storage of a security-sensitive credential without cryptographic protection. The plugin treats the verification code as retrievable rather than as a one-time secret. There is no hashing, no encryption, and no expiration binding tied to a secure secret. This design decision transforms any read primitive against wp_usermeta into a full authentication bypass.

Attack Vector

Exploitation is network-based and requires no authentication or user interaction. An attacker first obtains database read access, typically by chaining CVE-2026-9700 SQL Injection in the same plugin. The attacker queries wp_usermeta for the eventer_verification_code value associated with a target user, most commonly an administrator. The attacker then submits the extracted key to the plugin's custom reset endpoint along with a new password, gaining full account control. The vulnerable code path executes only on PHP 7.4 or lower, which limits the exposure surface to legacy hosting environments.

No verified public exploit code has been released for this specific vulnerability. See the Wordfence Vulnerability Report for technical details.

Detection Methods for CVE-2026-9701

Indicators of Compromise

Presence of non-null eventer_verification_code entries in the wp_usermeta table for administrator accounts
Unexpected password change events for privileged WordPress users without corresponding legitimate reset requests
HTTP POST requests targeting the Eventer plugin's custom password reset action from unfamiliar IP addresses
New administrator sessions originating from geographies or user agents inconsistent with normal activity

Detection Strategies

Audit the wp_usermeta table for any user_meta_key equal to eventer_verification_code and treat its presence as an exposure indicator
Correlate WordPress user_activation_key changes with plugin reset endpoint access logs to identify unauthorized resets
Monitor web server logs for SQL Injection patterns targeting Eventer plugin parameters, which often precede exploitation of this flaw
Alert on WordPress password_reset events that lack a preceding legitimate retrieve_password request

Monitoring Recommendations

Enable database query logging on the WordPress database and forward events to a centralized log platform for anomaly review
Track administrator authentication events and flag logins immediately following password changes
Deploy file integrity monitoring on wp-content/plugins/eventer/ to detect tampering or unauthorized modifications
Review vendor threat intelligence feeds for updates to the Wordfence Vulnerability Report

How to Mitigate CVE-2026-9701

Immediate Actions Required

Deactivate the Eventer plugin on all affected WordPress sites until a patched version is available and installed
Force password resets for all WordPress accounts, prioritizing administrator and editor roles
Remove any residual eventer_verification_code entries from the wp_usermeta table
Upgrade PHP to version 8.0 or later, which disables the vulnerable reset code path as a defense-in-depth measure

Patch Information

No fixed version has been confirmed in the enriched CVE data at time of publication. Review the vendor listing on CodeCanyon and the Wordfence Vulnerability Report for updates on remediated releases.

Workarounds

Restrict access to the Eventer plugin's password reset endpoint using web application firewall rules or .htaccess deny directives
Apply virtual patching rules to block SQL Injection attempts against Eventer plugin parameters, breaking the chain with CVE-2026-9700
Disable the custom reset workflow by removing or renaming the plugin's reset action handler if source-level edits are acceptable
Enforce PHP 8.0 or higher across the hosting environment to disable the vulnerable code path

bash

# Configuration example: remove exposed reset keys and restrict endpoint access

# 1. Purge plaintext verification codes from the database
wp db query "DELETE FROM wp_usermeta WHERE meta_key = 'eventer_verification_code';"

# 2. Deactivate the vulnerable plugin
wp plugin deactivate eventer

# 3. Block the plugin reset endpoint at the web server layer (Apache example)
# Add to .htaccess in WordPress root:
# <IfModule mod_rewrite.c>
#   RewriteEngine On
#   RewriteCond %{QUERY_STRING} (eventer_reset|eventer_verification_code) [NC]
#   RewriteRule .* - [F,L]
# </IfModule>