CVE-2026-63358 FileGator privilege escalation

High 8.4 Published 21 Jul 2026 Updated 30 Jul 2026

Authenticated users can escalate privileges to root by sending arbitrary Unix permission values to the chmod API endpoint without validation.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-63358?

CVE-2026-63358 is a high-severity vulnerability in FileGator, published on 21 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

FileGator accepts arbitrary Unix permission values via the '/chmoditems' API endpoint and passes the value directly to PHP's native 'chmod()' function through 'octdec()' conversion, with no validation. This allows an authenticated user with 'chmod' permission to upgrade their privileges to root.

Weakness: CWE-732

Which versions are affected by CVE-2026-63358?

It affects 1 product.

Products include Filegator Filegator.

How do I fix CVE-2026-63358?

No fix has been published for CVE-2026-63358 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-63358 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-63358 exists.

Public exploit code: 1 Nuclei template.

Sources

Also known as GHSA-9m9p-7p6h-xv99.