CVE-2025-12400 MEDIUM

CVE-2025-12400: LMB^Box Smileys <= 3.2 - Cross-Site Request Forgery to Stored Cross-Site Scripting

Vendor Lmbbox
Product LMB^Box Smileys
Weakness CWE-352 · CSRF
Published November 4, 2025
Last update April 8, 2026

CVSS base score

6.1/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

The LMB^Box Smileys plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 3.2. This is due to missing or incorrect nonce validation on the manage_page() function. This makes it possible for unauthenticated attackers to update settings and inject malicious web scripts via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Explanation of Vulnerability in Simple Terms

02Summary

LMB^Box Smileys versions 3.2 and earlier are vulnerable to cross-site request forgery (CSRF) attacks. An attacker can craft a malicious webpage that, when visited by a logged-in site administrator, performs unwanted actions on the site without the administrator's knowledge. The vulnerability requires user interaction—the admin must visit the attacker's page while logged in. Impact is limited to low-level data modification.

What an attacker can do

03Attacker Capabilities

Perform unwanted actions on the site by tricking a logged-in admin into visiting a malicious webpage.

Potential impact on your site

04Site Impact

Administrators could unknowingly make changes to site settings or data if they visit a malicious link while logged in.

Conditions required to exploit

05Prerequisites

Admin must be logged in and visit attacker-controlled page; no special privileges or authentication required from attacker.

Key dates

06Disclosure timeline

November 4, 2025 CVE published
April 8, 2026 Record updated