CVE-2026-53727

Gravedad CVSS v4.0:

ALTA

Tipo:

CWE-918 Falsificación de solicitud en servidor (SSRF)

Fecha de publicación:

17/07/2026

Última modificación:

17/07/2026

Descripción

*** Pendiente de traducción *** css_parser is a Ruby CSS parser. From 2.2.0 until 3.0.0, CssParser::Parser#read_remote_file in lib/css_parser/parser.rb, and therefore load_uri! and the @import-following branch of add_block!, issued HTTP and HTTPS requests against any host, port, and URI without a scheme allowlist, host or IP filtering, or protection against link-local, loopback, or RFC-1918 addresses. Location: redirects were followed recursively back into the same function, which also serviced file:// URIs, so a single attacker-controlled HTTP redirect could upgrade the bug from SSRF to arbitrary local file disclosure. Any consumer of css_parser that hands it attacker-influenced CSS together with a base_uri: option is exposed. This issue is fixed in version 3.0.0.

Impacto

Vector 4.0

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

Puntuación base: 8.90 ALTA
Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N

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

Puntuación base 4.0

8.90

Gravedad 4.0

ALTA

CVE-2026-53727

Descripción

Impacto

Referencias a soluciones, herramientas e información