CVE-2026-107864
Received Received - Intake

Stored XSS in Ad Inserter WordPress Plugin

Publication date: 2026-10-12

Last updated on: 2026-10-12

Assigner: Patchstack

Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Igor Funa Ad Inserter ad-inserter allows Stored XSS.This issue affects Ad Inserter: from n/a through 2.8.18.

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Meta Information

Published
2026-10-12
Last Modified
2026-10-12
Generated
2026-10-12
AI Q&A
2026-10-12
EPSS Evaluated
N/A
NVD
CVE-2026-107864
EUVD
EUVD-2026-97305

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
Igor Funa Ad Inserter 0

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 Ad Inserter plugin by Igor Funa. It allows attackers to inject malicious scripts into web pages that are stored on the server and executed when other users view those pages.

Detection Guidance

To detect this stored XSS vulnerability in Ad Inserter, inspect web application logs for suspicious input patterns like script tags or event handlers in user-generated content. Check for unauthorized modifications to plugin files or database entries. Review user input fields where ads are stored or displayed.

Impact Analysis

An attacker could steal user sessions, deface websites, or perform actions on behalf of users. If you use the affected Ad Inserter plugin versions up to 2.8.18, your website visitors may be exposed to these risks.

Compliance Impact

This vulnerability could lead to unauthorized data access or modification, violating GDPR (data protection) and HIPAA (health data privacy) requirements. Organizations may face fines or legal consequences if exploited.

Mitigation Strategies

Immediately update Ad Inserter to the latest version (2.8.18 or later). If an update is unavailable, disable the plugin temporarily. Implement input validation and output encoding for all user-supplied data. Monitor for signs of exploitation and remove any malicious scripts from your site.

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