CVE-2026-73315
Gravedad CVSS v4.0:
ALTA
Tipo:
CWE-918
Falsificación de solicitud en servidor (SSRF)
Fecha de publicación:
08/09/2026
Última modificación:
09/09/2026
Descripción
*** Pendiente de traducción *** XenForo before 2.3.13 contains a server-side request forgery vulnerability in the PayPal REST webhook handler that allows unauthenticated attackers to cause the server to make outbound HTTP requests to arbitrary destinations by supplying a crafted certificate URL in webhook headers without scheme, hostname, or allowlist validation. Attackers can submit a crafted POST to the PayPal webhook callback endpoint to reach internal network resources including cloud instance metadata services, potentially disclosing IAM credentials or enabling secondary internal service exploitation.
Impacto
Puntuación base 4.0
7.70
Gravedad 4.0
ALTA
Puntuación base 3.x
8.60
Gravedad 3.x
ALTA
Referencias a soluciones, herramientas e información
- https://bombobombone.github.io/posts/cve-2026-73315/
- https://github.com/BomboBombone/CVE-2026-73315
- https://www.vulncheck.com/advisories/xenforo-ssrf-via-paypal-rest-webhook-handler
- https://xenforo.com/community/threads/security-fixes-released-for-all-xenforo-and-media-gallery-versions-2-2-0-2-3-12.239856/
- https://xenforo.com/community/threads/xenforo-2-3-13-and-add-ons-released-includes-security-fixes.239857/