CVE-2026-35054
XenForo Stored Cross-Site Scripting via BB Code Rendering
CVSS Score
6.4
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-79 |
| Vendor | xenforo |
| Product | xenforo |
| Published | Apr 1, 2026 |
| Last Updated | Apr 1, 2026 |
Stay Ahead of the Next One
Get instant alerts for xenforo xenforo
Be the first to know when new medium vulnerabilities affecting xenforo xenforo are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
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
None
Integrity
None
Availability
None
Affected Versions
XenForo / XenForo
2.3.0 < 2.3.9
References
Credits
Antisocial