CVE-2026-111370
Deferred Deferred - Pending Action

Stored XSS in WP Visitor Statistics WordPress Plugin

Publication date: 2026-11-07

Last updated on: 2026-11-07

Assigner: Wordfence

Description
The WP Visitor Statistics (Real Time Traffic) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'os (also browser, res)' parameter in all versions up to, and including, 8.9.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

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Meta Information

Published
2026-11-07
Last Modified
2026-11-07
Generated
2026-11-07
AI Q&A
2026-11-07
EPSS Evaluated
N/A
NVD
CVE-2026-111370
EUVD
EUVD-2026-119161

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
osamaesh WP Visitor Statistics (Real Time Traffic) From 0 (inc) to 8.9.0 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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Executive Summary

This is a Stored Cross-Site Scripting (XSS) vulnerability in the WP Visitor Statistics plugin for WordPress. It allows unauthenticated attackers to inject malicious scripts via parameters like 'os', 'browser', or 'res' due to insufficient input sanitization and output escaping. These scripts execute when users access infected pages.

Detection Guidance

Check for the presence of the WP Visitor Statistics plugin version 8.9.0 or lower. Inspect WordPress sites for stored scripts in parameters like 'os', 'browser', or 'res' that may contain malicious payloads.

Impact Analysis

An attacker could steal user session cookies, redirect users to malicious sites, or perform actions on their behalf. This could lead to account takeovers, data theft, or spreading malware to visitors of the affected WordPress site.

Compliance Impact

This vulnerability could lead to unauthorized access to user data, violating GDPR's data protection requirements. For HIPAA, it may compromise protected health information if exploited on healthcare-related sites. Both standards require protecting user data from unauthorized access or disclosure.

Mitigation Strategies

Update the WP Visitor Statistics plugin to the latest version. If an update is unavailable, consider disabling or removing the plugin immediately. Review stored scripts in affected parameters for signs of compromise.

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