CVE-2025-54739 MEDIUM

CVE-2025-54739: WordPress Nexter Blocks Plugin <= 4.5.4 - Broken Access Control Vulnerability

Vendor Posimyth
Product Nexter Blocks
Weakness CWE-862 · Missing authorization
Published August 14, 2025
Last update April 28, 2026

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality Low
Integrity None

CVSS vector

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

What the vulnerability does

01Description

Missing Authorization vulnerability in POSIMYTH Nexter Blocks the-plus-addons-for-block-editor allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Nexter Blocks: from n/a through <= 4.5.4.

Explanation of Vulnerability in Simple Terms

02Summary

Nexter Blocks versions 4.5.4 and earlier lack proper authorization checks, allowing unauthenticated attackers to read sensitive information. The vulnerability requires no user interaction and is accessible over the network. An attacker can access data they should not be permitted to view without needing valid credentials or special conditions.

What an attacker can do

03Attacker Capabilities

Read sensitive information without authentication.

Potential impact on your site

04Site Impact

Unauthorized users can access confidential data stored or processed by Nexter Blocks.

Conditions required to exploit

05Prerequisites

Network access to the site; no authentication or user interaction required.

Key dates

06Disclosure timeline

August 14, 2025 CVE published
April 28, 2026 Record updated

Related vulnerabilities

08Related CVE