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OpenAdvisories
Medium · 6.4 CVE-2026-35057 EUVD-2026-17745

XenForo Stored Cross-Site Scripting via Structured Text Mentions

Published Apr 1, 2026 · Updated May 24, 2026 · Assigned by VulnCheck

Description

XenForo before 2.3.10 and before 2.2.19 is vulnerable to stored cross-site scripting (XSS) in structured text mentions, primarily affecting legacy profile post content. An attacker can inject malicious scripts through crafted mentions that are stored and executed when other users view the content.

Affected products

VendorProductAffectedFixed
XenForo XenForo 2.3.0 – < 2.3.10, < 2.2.19 2.3.10

References