CVE-2026-51833

HIGH

XenForo 2.3.8 - Authenticated Server-Side Request Forgery via RSS Feed Management

Title source: llm

Description

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.

References (2)

Core 2

Core References

https://xenforo.com

https://github.com/dennywise/CVE-2026-51833-Public-Disclosure/blob/main/CVE-2026-51833.md

View Exploit ZIP pw:eip

Scores

CVSS v3 7.5

EPSS 0.0038

EPSS Percentile 30.4%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation poc

Automatable yes

Technical Impact partial

Details

CWE

CWE-918

Status published

Published Jul 17, 2026

Tracked Since Jul 18, 2026