CVE-2026-5508 MEDIUM

CVE-2026-5508: WowPress <= 1.0.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes

Vendor Theyeti
Product WowPress
Weakness CWE-79 · XSS
Published April 8, 2026
Last update April 8, 2026

CVSS base score

6.4/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

The WowPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's `wowpress` shortcode in all versions up to, and including, 1.0.0. This is due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Explanation of Vulnerability in Simple Terms

02Summary

WowPress versions up to 1.0.0 contain a cross-site scripting (XSS) vulnerability that allows authenticated users to inject malicious scripts. The vulnerability has scope change, meaning injected code can affect other users or site functionality beyond the vulnerable component. An attacker with low-level account access can craft malicious input that executes in other users' browsers.

What an attacker can do

03Attacker Capabilities

Inject malicious scripts that execute in other users' browsers and affect site functionality.

Potential impact on your site

04Site Impact

Authenticated users can inject scripts affecting other visitors and site operations; data theft or account compromise possible.

Conditions required to exploit

05Prerequisites

Attacker must have a low-privilege account on the site; no user interaction required.

Key dates

06Disclosure timeline

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