Feed/CVE-2026-8353
CVE-2026-8353LOWCVSS 0.0

Concrete CMS is vulnerable to Stored XSS via page name in the Atomik theme

Published May 26, 2026·Updated Jun 29, 2026

NVD Description

Concrete CMS version 9.0 to 9.5.0 is vulnerable to Stored XSS via page name in the Atomik theme. A rogue editor can inject arbitrary JavaScript that executes in the context of any authenticated user visiting the affected account pages. This can lead to session hijacking, credential theft, malicious actions performed on behalf of users, and potential privilege escalation. Thanks Yonatan Drori (Tenzai) for reporting.

Affected Packages (1)

concrete5/concrete5COMPOSER
From 9.0.0RC.1
Fixed in 9.5.1

References

View on NVD Search GitHub Search Google

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