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CVE-2026-35056
Published: Apr 1, 2026
Modified: May 25, 2026
PUBLISHED
CVSS v3.1
7.2
HIGH
Description
XenForo before 2.3.9 and before 2.2.18 allows remote code execution (RCE) by authenticated, but malicious, admin users. An attacker with admin panel access can execute arbitrary code on the server.
| Vendor | Product | Versions |
|---|---|---|
XenForo | XenForo | affected 2.3.0 - < 2.3.9affected 0 - < 2.2.18 |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
References
XenForo 2.3.9 (inc XFMG) & 2.2.18 Released (Security Fix)
vendor-advisory
patch
VulnCheck Advisory: XenForo Remote Code Execution via Authenticated Admin
third-party-advisory
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