ElkArte Forum 1.1.9 Authenticated Remote Code Execution via Theme Upload

Advisories

severity: high
date: December 11, 2025
Affecting: ElkArte Forum 1.1.9
CVE: CVE-2024-58295
CWE: CWE-434 Unrestricted Upload of File with Dangerous Type
CVSS: 8.6
CVSS V4 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
References: ExploitDB-52026
ElkArte Homepage
ElkArte Software Download
Credit: tmrswrr
Description: ElkArte Forum 1.1.9 contains a remote code execution vulnerability that allows authenticated administrators to upload malicious PHP files through the theme installation process. Attackers can upload a ZIP archive with a PHP file containing system commands, which can then be executed by accessing the uploaded file in the theme directory.