CVE-2026-51833

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

Xenforo 2.3.8 is vulnerable to SSRF. Attackers that have administrator privileges or are able to add/save RSS feeds can enumerate internal services (ports) or expose the original IP address of the server.

Published 2026-07-17. Last modified 2026-07-23.