Improper input validation in Apache Sling

CVE-2013-4390

Open redirect vulnerability in the AbstractAuthenticationFormServlet in the Auth Core (org.apache.sling.auth.core) bundle before 1.1.4 in Apache Sling allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a URL in the resource parameter, related to "a custom login form and XSS."

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.031 (86.2th percentile) — read the EPSS interpretation.