CVE-2026-39483 MEDIUM

CVE-2026-39483: WordPress VK All in One Expansion Unit plugin <= 9.113.3 - Cross Site Scripting (XSS) vulnerability

Vendor Hidekazu Ishikawa
Product VK All in One Expansion Unit
Weakness CWE-79 · XSS
Published April 8, 2026
Last update April 29, 2026

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Hidekazu Ishikawa VK All in One Expansion Unit vk-all-in-one-expansion-unit allows Stored XSS.This issue affects VK All in One Expansion Unit: from n/a through <= 9.113.3.

Explanation of Vulnerability in Simple Terms

02Summary

VK All in One Expansion Unit versions up to 9.113.3 contain a cross-site scripting (XSS) vulnerability. An authenticated user can inject malicious scripts that execute in other users' browsers when they interact with affected pages. The vulnerability requires user interaction and can affect confidentiality, integrity, and availability of the site.

What an attacker can do

03Attacker Capabilities

Inject malicious scripts that run in other users' browsers to steal data, modify content, or disrupt site functionality.

Potential impact on your site

04Site Impact

Authenticated users' sessions and data can be compromised; site content may be altered or defaced for other visitors.

Conditions required to exploit

05Prerequisites

Attacker must have a low-privilege account and trick a user into visiting a crafted link or page.

Key dates

06Disclosure timeline

April 8, 2026 CVE published
April 29, 2026 Record updated

Related vulnerabilities

08Related CVE