PT-2026-29432 · Xenforo · Xenforo

Metho · Published 2026-04-01 · Updated 2026-04-01 · CVE-2026-35057

Mitre

CVSS v3.1

6.4

Medium

AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

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.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-35057

Affected Products

Xenforo

References · 4

• https://xenforo.com/community/threads/xenforo-2-3-10-add-ons-and-2-2-19-released-includes-security-fix.236249 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-35057 · Security Note
• https://vulncheck.com/advisories/xenforo-stored-cross-site-scripting-via-structured-text-mentions · Note
• https://github.com/methosiea/xenforo-2-xss · Note