CVE-2025-54739

WordPress Nexter Blocks Plugin <= 4.5.4 - Broken Access Control Vulnerability

5.3 Medium

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: Low
Integrity: None
Availability: None

Exploit likelihood

0.26%Up 0.2 points since Aug 15, 2025

What each source reports

CVE List Score used 5.3

WordPress Nexter Blocks Plugin <= 4.5.4 - Broken Access Control Vulnerability

Record: CVE-2025-54739
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-862
Updated: 2026-11-02

EUVDEUVD-2025-24916 5.3

Record: EUVD-2025-24916
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-jx64-cq6v-gwvc 5.3

Missing Authorization vulnerability in POSIMYTH Nexter Blocks allows Exploiting Incorrectly...

Missing Authorization vulnerability in POSIMYTH Nexter Blocks allows Exploiting Incorrectly Configured Access Control Security Levels. This issue affects Nexter Blocks: from n/a through 4.5.4.

Record: GHSA-jx64-cq6v-gwvc
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-862
Updated: 2026-11-02

NVD 5.3

Record: CVE-2025-54739
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-862
Updated: 2026-11-02

Affected products

posimyth nexter blocks

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-54739 is a medium vulnerability (CVSS 5.3) in Posimyth Nexter Blocks, published August 14, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.26%, the 17th percentile. No source names a fixed version.