CVE-2026-44258 CRITICAL

CVE-2026-44258: efw4.X: Path Traversal via Unchecked dst Parameter leads to Remote Code Execution

Vendor Efwgrp
Product efw4.X
Weakness CWE-78
Published May 12, 2026
Last update May 14, 2026

CVSS base score

9.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

efw4.X is an Enterprise Framework for Web. Prior to 4.08.010, the elfinder_checkRisk function validates target and targets for path traversal and home containment, but does not validate the dst (destination) parameter used by elfinder_paste. An attacker can copy or move files from within the home directory to any arbitrary destination by setting dst to a base64-encoded traversal path. This bypasses the protected=true security control. This vulnerability is fixed in 4.08.010.

Key dates

02Disclosure timeline

May 12, 2026 CVE published
May 14, 2026 Record updated