All vulnerabilities
CVE-2026-89427

Ad Inserter <= 2.8.18 - Reflected Cross-Site Scripting via 's' Search Parameter

spacetime Ad Inserter – Ad Manager & AdSense Ads
Open in ThreatlineRecord JSON
CVSS
6.1Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.25%Chance of exploitation activity in the next 30 days, higher than 15% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version yet
Published1 Oct 2026Updated 3 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version.

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.

Text from CVE List

Affected versions 1

  • Ad Inserter – Ad Manager & AdSense Adsaffected: all versions through 2.8.18CVE List

References 6