CVE Watch23 jul 2026

CVE-2026-8353

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 JavaScr

CVSS

4.8

Medio

EPSS

0.1%

KEV

—

Exploit Today

0-100

Publicado: 22 may 2026 · Última mod.: 23 jul 2026 · CWE-79

EPSS · 30d

0.1%EPSS · 30 días0.1%

2026-07-022026-07-29

Descripción técnica

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. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 2.1 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks Yonatan Drori (Tenzai) for reporting.

Referencias oficiales

documentation.concretecms.orghttps://documentation.concretecms.org/9-x/developers/introduction/version-history/951-release-notes

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