CVE-2025-66150 MEDIUM

CVE-2025-66150: WordPress Appender plugin <= 1.1.1 - Broken Access Control vulnerability

Vendor Merkulove
Product Appender
Weakness CWE-862 · Missing authorization
Published December 31, 2025
Last update April 28, 2026
View on NVD All CVEs

CVSS base score

5.4/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

What the vulnerability does

01Description

Missing Authorization vulnerability in merkulove Appender appender allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Appender: from n/a through <= 1.1.1.

Explanation of Vulnerability in Simple Terms

02Summary

Appender versions 1.1.1 and earlier lack proper authorization checks, allowing authenticated users to modify or disable site functionality without proper permission. An attacker with low-level access can alter data or disrupt operations. Update to a version newer than 1.1.1 to resolve this issue.

What an attacker can do

03Attacker Capabilities

Modify or disable site functionality without proper authorization.

Potential impact on your site

04Site Impact

Authenticated users can alter or disable critical features without intended permissions.

Conditions required to exploit

05Prerequisites

Attacker must have a low-level user account on the site.

Key dates

06Disclosure timeline

December 31, 2025 CVE published
April 28, 2026 Record updated

Related vulnerabilities

08Related CVE

CVE-2026-24616 WordPress WP Popups plugin <= 2.2.0.5 - Broken Access Control vulnerability CVE-2024-30484 WordPress RT Easy Builder plugin <= 2.0 - Broken Access Control vulnerability CVE-2024-32522 WordPress Open Close WooCommerce Store plugin <= 4.9.1 - Broken Access Control vulnerability CVE-2023-37887 WordPress WPSchoolPress plugin <= 2.2.7 - Broken Access Control vulnerability CVE-2019-25141 Easy WP SMTP <= 1.3.9 - Missing Authorization to Arbitrary Options Update