The Ad Inserter – Ad Manager & AdSense Ads plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via 's' Search Parameter in all versions up to, and including, 2.8.18 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 a site administrator has configured at least one Ad Inserter block using the {title} or {short-title} placeholder with that block enabled for search pages, which is a standard, documented plugin feature.
History

Sat, 03 Oct 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 01 Oct 2026 20:00:00 +0000

Type Values Removed Values Added
First Time appeared Spacetime
Spacetime ad Inserter
Wordpress-extensions
Wordpress-extensions ad Inserter
Vendors & Products Spacetime
Spacetime ad Inserter
Wordpress-extensions
Wordpress-extensions ad Inserter

Thu, 01 Oct 2026 09:00:00 +0000

Type Values Removed Values Added
Description The Ad Inserter – Ad Manager & AdSense Ads plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via 's' Search Parameter in all versions up to, and including, 2.8.18 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 a site administrator has configured at least one Ad Inserter block using the {title} or {short-title} placeholder with that block enabled for search pages, which is a standard, documented plugin feature.
Title Ad Inserter <= 2.8.18 - Reflected Cross-Site Scripting via 's' Search Parameter
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published: 2026-10-01T08:28:45.082Z

Updated: 2026-10-03T15:42:51.455Z

Reserved: 2026-09-11T18:43:11.240Z

Link: CVE-2026-89427

cve-icon Vulnrichment

Updated: 2026-10-03T15:40:59.525Z

cve-icon NVD

Status : Deferred

Published: 2026-10-01T09:17:09.753

Modified: 2026-10-03T16:16:40.963

Link: CVE-2026-89427

cve-icon Redhat

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