SEPTEMBER 17, 2026
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Case File

CVE-2026-81890

MEDIUM · CVSS 5.4 EPSS 0.15% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-31 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

The vulnerability affects the elFinder file manager in versions prior to 2.1.70, where the netmount command lacks CSRF protection, allowing attackers to exploit this oversight. This can lead to unauthorized FTP mounts being established in a victim's session, enabling the attacker to connect to a malicious FTP server and transmit sensitive credentials without proper validation. Organizations using elFinder for web file management should prioritize updating to version 2.1.70 to mitigate this risk.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-81890
Severity
MEDIUM
CVSS
5.4
EPSS
0.15%
Java

Original NVD Description

elFinder is an open-source file manager for web, written in JavaScript using jQuery UI. Prior to 2.1.70, the netmount command is omitted from elFinderConnector::$csrfProtectedCmds in php/elFinderConnector.class.php, so validateCsrfToken() is not called for this state-changing operation. In the shipped php/connector.minimal.php-dist configuration, FTP network mounts are enabled by default, and attacker-controlled protocol, host, path, port, user, pass, alias, and options arguments flow through elFinder::netmount() in php/elFinder.class.php to php/elFinderVolumeFTP.class.php. A cross-site request can therefore persist an attacker-chosen FTP mount in the victim's session, cause the PHP server to connect to an attacker-chosen FTP host and port, and send supplied credentials without an X-elFinder-CSRF token. This issue is fixed in version 2.1.70.