EUVD-2026-17743

| CVE-2026-35056 HIGH
2026-04-01 VulnCheck
8.6
CVSS 4.0
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CVSS Vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
X

Lifecycle Timeline

3
Analysis Generated
Apr 01, 2026 - 01:15 vuln.today
EUVD ID Assigned
Apr 01, 2026 - 01:15 euvd
EUVD-2026-17743
CVE Published
Apr 01, 2026 - 00:30 nvd
HIGH 8.6

Tags

RCE Code Injection

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.

Analysis

Remote code execution in XenForo versions prior to 2.3.9 and 2.2.18 allows authenticated administrators to execute arbitrary code on the server. Attack requires low-privilege admin panel access (PR:L) with network accessibility (AV:N) and low complexity (AC:L). …

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Remediation

Within 24 hours: Identify all XenForo installations and confirm current versions (vulnerable: 2.3.x prior to 2.3.9, 2.2.x prior to 2.2.18). Audit administrator account activity logs for suspicious actions and review admin credentials for compromise indicators. …

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Priority Score

43
Low Medium High Critical
KEV: 0
EPSS: +0.3
CVSS: +43
POC: 0

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EUVD-2026-17743 vulnerability details – vuln.today
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