CVE-2026-9280
Deferred Deferred - Pending Action
Reflected Cross-Site Scripting in Ad Inserter WordPress Plugin

Publication date: 2026-06-06

Last updated on: 2026-06-08

Assigner: Wordfence

Description
The Ad Inserter – Ad Manager & AdSense Ads plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via URL Parameters in iframe Mode in all versions up to, and including, 2.8.15 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. Exploitation requires that iframe mode (AI_OPTION_IFRAME) is enabled on at least one ad block displayed on the targeted page, which is a non-default but supported configuration commonly used for AdSense and JavaScript-based ads.
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Meta Information
Published
2026-06-06
Last Modified
2026-06-08
Generated
2026-06-27
AI Q&A
2026-06-06
EPSS Evaluated
2026-06-25
NVD
CVE-2026-9280
EUVD
EUVD-2026-34945
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
advanced_ads ad_inserter to 2.8.15 (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

The Ad Inserter – Ad Manager & AdSense Ads plugin for WordPress has a vulnerability known as Reflected Cross-Site Scripting (XSS) via URL Parameters in iframe Mode. This affects all versions up to and including 2.8.15. The issue arises because the plugin does not properly sanitize input or escape output when iframe mode is enabled on at least one ad block. This allows unauthenticated attackers to inject arbitrary web scripts into pages, which execute if a user is tricked into clicking a malicious link.

Impact Analysis

This vulnerability can impact you by allowing attackers to execute malicious scripts in the context of your website. This can lead to theft of user data, session hijacking, defacement of your website, or redirecting users to malicious sites. Since exploitation requires user interaction (clicking a link) and iframe mode enabled, the risk depends on your configuration and user behavior.

Compliance Impact

The vulnerability allows unauthenticated attackers to inject arbitrary web scripts via reflected cross-site scripting (XSS) in iframe mode, potentially leading to unauthorized access or manipulation of user data.

Such unauthorized script injection can compromise the confidentiality and integrity of user data, which may impact compliance with data protection regulations like GDPR and HIPAA that require safeguarding personal and sensitive information.

However, the provided information does not explicitly detail the direct effects on compliance with these standards.

Mitigation Strategies

To mitigate this vulnerability, you should disable iframe mode (AI_OPTION_IFRAME) on all ad blocks in the Ad Inserter plugin, as exploitation requires iframe mode to be enabled.

Additionally, updating the Ad Inserter plugin to a version later than 2.8.15, where this vulnerability is fixed, is recommended.

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