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CVE-2026-35054
Published: Apr 1, 2026
Modified: May 24, 2026
PUBLISHED
CVSS v3.1
6.4
MEDIUM
Description
XenForo before 2.3.9 is vulnerable to stored cross-site scripting (XSS) related to BB code rendering. An attacker can inject malicious scripts through BB code that are stored and executed when other users view the content.
| Vendor | Product | Versions |
|---|---|---|
XenForo | XenForo | affected 2.3.0 - < 2.3.9 |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
References
XenForo 2.3.9 (inc XFMG) & 2.2.18 Released (Security Fix)
vendor-advisory
patch
VulnCheck Advisory: XenForo Stored Cross-Site Scripting via BB Code Rendering
third-party-advisory
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