CVE-2025-54739: 
WordPress vulnerability analysis and mitigation

A Missing Authorization vulnerability was identified in POSIMYTH Nexter Blocks, affecting versions through 4.5.4. The vulnerability was discovered by MD ISMAIL and publicly disclosed on August 14, 2025. This security issue allows exploitation of incorrectly configured access control security levels (Patchstack).

The vulnerability is classified as a broken access control issue, which stems from missing authorization, authentication, or nonce token checks in certain functions. This allows unprivileged users to execute higher privileged actions. The vulnerability has been assigned a CVSS v3.1 base score of 5.3 (Medium) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N, indicating it is network-accessible, requires low attack complexity, and needs no privileges or user interaction (Patchstack).

The vulnerability has been assessed with a low severity impact, primarily affecting confidentiality with no direct impact on integrity or availability. The attack vector is network-accessible, making it potentially exploitable by remote attackers (Patchstack).

The vulnerability has been fixed in version 4.5.5 of Nexter Blocks. Users are advised to update to version 4.5.5 or later to remove the vulnerability. Patchstack users have the option to enable auto-update for vulnerable plugins (Patchstack).