CVE-2026-19988: Alaev Seo Tools Extension

Medium severity, CVSS 4.3. EPSS: 0.4% chance of exploitation in the next 30 days.

A vulnerability was detected in Alaev SEO Tools Extension up to 1.0.10 on Chrome. This impacts the function addDiv of the file src/popup.html of the component Popup UI. Performing a manipulation results in basic cross site scripting. The attack can be initiated remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

• Alaev Seo Tools Extension: version 1.0.0 only; version 1.0.1 only; version 1.0.2 only; version 1.0.3 only; version 1.0.4 only; version 1.0.5 only; …

Published 2026-08-17. Last modified 2026-08-20.