CVE-2026-44260 HIGH

CVE-2026-44260: efw4.X: readonly Flag Not Enforced Server-Side

Vendor Efwgrp
Product efw4.X
Weakness CWE-863 · Incorrect authorization
Published May 12, 2026
Last update May 13, 2026

CVSS base score

8.1/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

What the vulnerability does

01Description

efw4.X is an Enterprise Framework for Web. Prior to 4.08.010, the readonly flag set on the <efw:elFinder> JSP tag is intended to prevent file modifications. When protected=true, elfinder_checkRisk enforces that the client sends readonly=true (matching the session value), but no event handler checks the readonly value before performing write operations. The flag only controls client-side UI elements (disabling buttons) and response metadata (write: 0, locked: 1). An attacker who sends requests directly (bypassing the UI) can perform all file operations despite readonly=true. This vulnerability is fixed in 4.08.010.

Key dates

02Disclosure timeline

May 12, 2026 CVE published
May 13, 2026 Record updated