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CVE-2026-8353

Estado: AnalizadaBaja (2.1)—

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.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Concretecms — Concrete CMS

CWE

Referencias

JSON original (NVD)

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  "published": "2026-05-22T15:16:26.793",
  "references": [
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      "url": "https://documentation.concretecms.org/9-x/developers/introduction/version-history/951-release-notes",
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        "Vendor Advisory"
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      "value": "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."
    },
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      "lang": "es",
      "value": "La versión 9.0 a 9.5.0 de Concrete CMS es vulnerable a XSS Almacenado a través del nombre de la página en el tema Atomik. Un editor malicioso puede inyectar JavaScript arbitrario que se ejecuta en el contexto de cualquier usuario autenticado que visita las páginas de cuenta afectadas. Esto puede llevar a secuestro de sesión, robo de credenciales, acciones maliciosas realizadas en nombre de los usuarios y potencial escalada de privilegios. El equipo de seguridad de Concrete CMS otorgó a esta vulnerabilidad una puntuación CVSS v.4.0 de 2.1 con el 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. Gracias a Yonatan Drori (Tenzai) por informar."
    }
  ],
  "lastModified": "2026-07-23T16:10:00.137",
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