CVE-2026-44260 efw4.X: readonly Flag Not Enforced Server-Side
Attackers can bypass server-side readonly restrictions in efw4.X to perform unauthorized file modifications by sending direct requests, ignoring client-side UI controls.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-44260?
CVE-2026-44260 is a high-severity missing authorization vulnerability in efwGrp efw4.X, published on 12 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-863
Which versions are affected by CVE-2026-44260?
How do I fix CVE-2026-44260?
No fix has been published for CVE-2026-44260 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-44260 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-44260 exists.
Sources
Also known as GHSA-5454-qhrf-vcvh.