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Medium · 6.1 Public exploit CVE-2026-73320 EUVD-2026-72757GHSA-5j56-975f-v5v8

XenForo < 2.3.13 Unauthenticated Information Disclosure via Unfurl Endpoint

Published Sep 8, 2026 · Updated Oct 1, 2026 · Assigned by VulnCheck

Vendor: XenForo Product: XenForo

Description

XenForo before 2.3.13 contains an unauthenticated information disclosure vulnerability that allows unauthenticated attackers to retrieve private unfurl records by supplying predictable auto-increment primary key IDs to the unfurl endpoint. Attackers can enumerate or predict result IDs and query the endpoint without any session, user, or visibility checks to obtain rendered preview HTML, original URLs, and query strings from private conversations and other restricted content.

Affected products

VendorProductAffectedFixed
XenForo XenForo < 2.3.13 2.3.13

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

References