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CVE Watch23 jul 2026

CVE-2026-8203

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 edi

CVSS

5.4

Medio

EPSS

0.1%

p2

KEV

—

Exploit Today

1

0-100

Publicado: 21 may 2026 · Última mod.: 23 jul 2026 · CWE-79

EPSS · 30d
0.1%EPSS · 30 días0.2%
2026-10-052026-11-02
Descripción técnica

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.

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