CVE-2026-14856

Gravedad CVSS v4.0:

MEDIA

Tipo:

CWE-79 Neutralización incorrecta de la entrada durante la generación de la página web (Cross-site Scripting)

Fecha de publicación:

27/07/2026

Última modificación:

27/07/2026

Descripción

*** Pendiente de traducción *** A stored Cross-Site Scripting (XSS) vulnerability in the file upload functionality of the Media Manager in TastyIgniter v4.3.0, caused by insufficient validation and sanitization of SVG files. An authenticated user with low privileges can upload a malicious SVG file containing JavaScript code. When an administrator views that file, the code executes in the context of their browser. By chaining this vulnerability with a Cross-Site Request Forgery (CSRF) attack, an attacker can extract the administrator’s CSRF token and perform unauthorized actions—such as modifying credentials—thereby gaining full control of the administrative account.

Impacto

Vector 4.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H CVSS v4.0 Severidad y Métricas:

Puntuación base: 6.30 MEDIA
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H

Vector de acceso (AV): A través de red
Complejidad de acceso (AC): Bajo
Attack Requirements (AT): Ninguno
Privilegios Requeridos (PR): Bajo
Interacción del usuario (UI): Activo
Confidentiality (VC): Ninguno
Integrity (VI): Ninguno
Availability (VA): Ninguno
Confidentiality (SC): Alto
Integrity (SI): Alto
Availability (SA): Alto

Puntuación base 4.0

6.30

Gravedad 4.0

MEDIA

Referencias a soluciones, herramientas e información

https://www.incibe.es/en/incibe-cert/notices/aviso/stored-cross-site-scripting-xss-tastyigniter-media-manager