[CVE-2026-73316] XenForo before 2.3.13 contains a payment replay vulnerability in the PayPal REST payment provider th…

Descripción técnica

XenForo before 2.3.13 contains a payment replay vulnerability in the PayPal REST payment provider that allows attackers to process the same webhook payload multiple times by exploiting a missing duplicate transaction ID check. Attackers can replay a valid webhook payload to trigger duplicate payment events, resulting in repeated subscription activations and unauthorized account upgrades.

Puntuación CVSS

Score: 7.5/10 — Severidad: HIGH — Estado NIST: Received

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Debilidades (CWE)

CWE-345

Fuente oficial

Publicado en NIST NVD.