CVE-2026-8134
Gravedad CVSS v4.0:
CRÍTICA
Tipo:
CWE-23
Limitación incorrecta de nombre de ruta relativa a un directorio restringido (Relative Path Traversal)
Fecha de publicación:
21/05/2026
Última modificación:
21/05/2026
Descripción
*** Pendiente de traducción *** Concrete CMS 9.5.0 and below fails to sanitize path traversal sequences in the ptComposerFormLayoutSetControlCustomTemplate field when saving page type composer form layouts. An authenticated rogue administrator with composer form editing rights can exploit this to include arbitrary readable files on the server. Combined with the file uploader's extension-only validation (which permits PHP code in files saved with image extensions like .png), this can result in authenticated remote code execution. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 9.4 with vector CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H Thanks Yonatan Drori (Tenzai) for reporting.
Impacto
Puntuación base 4.0
9.40
Gravedad 4.0
CRÍTICA