CVE-2026-4303 MEDIUM

CVE-2026-4303: WP Visitor Statistics (Real Time Traffic) <= 8.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'height' Shortcode Attribute

Vendor Osamaesh
Product WP Visitor Statistics (Real Time Traffic)
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 WP Visitor Statistics (Real Time Traffic) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'wsm_showDayStatsGraph' shortcode in all versions up to, and including, 8.4 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

WP Visitor Statistics (Real Time Traffic) versions 8.4 and earlier contain a cross-site scripting vulnerability. An authenticated user with low privileges can inject malicious scripts that execute in other users' browsers, potentially affecting the entire site. The vulnerability requires network access but no user interaction from the victim.

What an attacker can do

03Attacker Capabilities

Inject malicious scripts that run in other users' browsers and affect the entire site.

Potential impact on your site

04Site Impact

Authenticated users can inject scripts affecting all site visitors, risking credential theft, malware distribution, or site defacement.

Conditions required to exploit

05Prerequisites

Attacker must have a low-privilege authenticated account on the site.

Key dates

06Disclosure timeline

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

Related vulnerabilities

08Related CVE