CVE-2026-8203
Concrete CMS 9.5.0 and below has Stored XSS on the height parameter
Vexday Risk Score
21Bajo
Decisión SSVC (CISA)
Track
Sin señal de explotación → monitorear
CVSS 7.3EPSS 0.1%KEV nãoPoC —Nuclei —Metasploit —Patch —
Ciclo de vida
21 may 2026Publicada en NVD
Recomendación: Monitorear — sin señal de explotación por ahora.
Concrete CMS 9.5.0 and below has Stored XSS on the height parameter. The controller does not validate or sanitize $height. Any user with editor privileges can inject malicious JavaScript that executes in the context of any visitor's browser, potentially leading to session hijacking, credential theft, or other malicious actions. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 7.3 with vector CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N. Thanks Alfin Joseph for reporting.
CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Productos afectados
Concrete CMS · Concrete CMS¿Quieres saber si tu infraestructura está expuesta a esto?
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