---
id: CVE-2025-66150
title: >-
  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.
summary: >-
  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.
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L'
cwe:
  - CWE-862
published: '2025-12-31'
updated: '2026-09-23'
sourceUpdated: '2026-09-23T14:10:00.190'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-66150'
references:
  - url: >-
      https://patchstack.com/database/Wordpress/Plugin/appender/vulnerability/wordpress-appender-plugin-1-1-1-broken-access-control-vulnerability?_s_id=cve
    label: audit@patchstack.com
tags:
  - nvd
epss: 0.00197
epssPercentile: 0.08397
ingestedAt: '2026-09-23T14:25:29.775Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.