CVE-2026-41901

Gravedad CVSS v3.1:

CRÍTICA

Tipo:

No Disponible / Otro tipo

Fecha de publicación:

12/05/2026

Última modificación:

12/05/2026

Descripción

*** Pendiente de traducción *** Thymeleaf is a server-side Java template engine for web and standalone environments. Prior to 3.1.5.RELEASE, a security bypass vulnerability exists in the expression execution mechanisms of Thymeleaf. Although the library provides mechanisms to avoid the execution of potentially dangerous expressions in some specific sandboxed (restricted) contexts, it fails to properly neutralize specific constructs that allow this kind of expressions to be executed. If an application developer passes to the template engine unsanitized variables that contain such expressions, and these values are used in sandboxed contexts inside the templates, these expressions can be executed achieving Server-Side Template Injection (SSTI). This vulnerability is fixed in 3.1.5.RELEASE.

Impacto

Vector 3.x

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H CVSS v3.1 Severidad y Métricas:

Puntuación base: 9.00 CRÍTICA
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Vector de acceso (AV): A través de red
Complejidad de acceso (AC): Alto
Privilegios Requeridos (PR): Ninguno
Interacción del usuario (UI): Ninguno
Alcance (S): Modificado
Impacto a la confidencialidad (C): Alto
Impacto a la integridad (I): Alto
Impacto a la disponibilidad (A): Alto

Puntuación base 3.x

9.00

Gravedad 3.x

CRÍTICA

Referencias a soluciones, herramientas e información

https://github.com/thymeleaf/thymeleaf/security/advisories/GHSA-c9ph-gxww-7744