CVE-2025-59948

Gravedad CVSS v3.1:

MEDIA

Tipo:

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

Fecha de publicación:

29/09/2025

Última modificación:

03/10/2025

Descripción

*** Pendiente de traducción *** FreshRSS is a free, self-hostable RSS aggregator. Versions 1.26.3 and below do not sanitize certain event handler attributes in feed content, so by finding a page that renders feed entries without CSP, it is possible to execute an XSS payload. The Allow API access authentication setting needs to be enabled by the instance administrator beforehand for the attack to work as it relies on api/query.php. An account takeover is possible by sending a change password request via the XSS payload / setting UserJS for persistence / stealing the autofill password / displaying a phishing page with a spoofed URL using history.replaceState()<br /> If the victim is an administrator, the attacker can also perform administrative actions. This issue is fixed in version 1.27.0.

Impacto

Vector 3.x

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

Puntuación base: 6.70 MEDIA
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:L

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