Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

CVE-2026-35459

Gravedad CVSS v4.0:
CRÍTICA
Tipo:
CWE-918 Falsificación de solicitud en servidor (SSRF)
Fecha de publicación:
06/04/2026
Última modificación:
20/04/2026

Descripción

*** Pendiente de traducción *** pyLoad is a free and open-source download manager written in Python. In 0.5.0b3.dev96 and earlier, pyLoad has a server-side request forgery (SSRF) vulnerability. The fix for CVE-2026-33992 added IP validation to BaseDownloader.download() that checks the hostname of the initial download URL. However, pycurl is configured with FOLLOWLOCATION=1 and MAXREDIRS=10, causing it to automatically follow HTTP redirects. Redirect targets are never validated against the SSRF filter. An authenticated user with ADD permission can bypass the SSRF fix by submitting a URL that redirects to an internal address.

Productos y versiones vulnerables

CPE Desde Hasta
cpe:2.3:a:pyload-ng_project:pyload-ng:*:*:*:*:*:python:*:* 0.5.0b3.dev97 (excluyendo)