CVE-2026-39638 MEDIUM

CVE-2026-39638: WordPress Qubely plugin <= 1.8.14 - Cross Site Scripting (XSS) vulnerability

Vendor Themeum

Product Qubely

Weakness CWE-79 · XSS

Published April 8, 2026

Last update April 29, 2026

View on NVD All CVEs

CVSS base score

5.9/10

Attack vector Network

Attack complexity Low

Privileges required High

User interaction Required

Confidentiality Low

Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/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 Themeum Qubely qubely allows Stored XSS.This issue affects Qubely: from n/a through <= 1.8.14.

Explanation of Vulnerability in Simple Terms

02Summary

Qubely versions up to 1.8.14 contain a cross-site scripting (XSS) vulnerability that allows authenticated users with high privileges to inject malicious scripts. The vulnerability requires user interaction, such as clicking a malicious link. An attacker with admin or editor access can craft a payload that executes in other users' browsers, potentially compromising site security or stealing sensitive data.

What an attacker can do

03Attacker Capabilities

Inject malicious scripts that execute in other users' browsers when they interact with a crafted link.

Potential impact on your site

04Site Impact

Admins or editors could be tricked into clicking a link that runs attacker code in their browser, risking account compromise or data theft.

Conditions required to exploit

05Prerequisites

Attacker must have high-level site privileges (admin/editor) and the victim must click a malicious link.

Key dates

06Disclosure timeline

April 8, 2026 CVE published

April 29, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-39638 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/79.html AskarLabs — CWE-79 write-up Cross-Site Scripting

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