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CVE-2026-81890

CVE-2026-81890 · elFinder: CSRF in netmount allows forced FTP mounts and server-side FTP connections

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 5.4 · Medium · EPSS 0.2% · Fix available

Published
Updated

Stack: php

Affected products and versions

  • elfinder

    Versions
    • < 2.1.70: Affected

    No fix published

  • studio-42/elfinder Packagist

    Versions
    • 2.0.3
    • 2.0.4
    • 2.0.5
    • 2.0.6
    • 2.0.7
    • 2.0.8
    • 2.0.9
    • 2.1.0
    • 2.1.1
    • 2.1.10
    • 2.1.11
    • 2.1.12
    • 2.1.13
    • 2.1.14
    • 2.1.15
    • 2.1.16
    • 2.1.17
    • 2.1.18
    • 2.1.19
    • 2.1.2
    • 2.1.20
    • 2.1.21
    • 2.1.22
    • 2.1.23
    • 2.1.24
    • 2.1.25
    • 2.1.26
    • 2.1.27
    • 2.1.28
    • 2.1.29
    • 2.1.3
    • 2.1.30
    • 2.1.31
    • 2.1.32
    • 2.1.33
    • 2.1.34
    • 2.1.35
    • 2.1.36
    • 2.1.37
    • 2.1.38
    • 2.1.39
    • 2.1.4
    • 2.1.40
    • 2.1.41
    • 2.1.42
    • 2.1.43
    • 2.1.44
    • 2.1.45
    • 2.1.46
    • 2.1.47
    • 2.1.48
    • 2.1.49
    • 2.1.5
    • 2.1.50
    • 2.1.51
    • 2.1.52
    • 2.1.53
    • 2.1.54
    • 2.1.55
    • 2.1.56
    • 2.1.57
    • 2.1.58
    • 2.1.59
    • 2.1.6
    • 2.1.60
    • 2.1.61
    • 2.1.62
    • 2.1.63
    • 2.1.64
    • 2.1.65
    • 2.1.66
    • 2.1.67
    • 2.1.68
    • 2.1.69
    • 2.1.7
    • 2.1.8
    • 2.1.9
    Affected ranges
    • ECOSYSTEM: < 2.1.70

    Update to 2.1.70

Original sources

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