CVE-2026-33477 FileRise has incorrect authorization in /api/file/snippet.php allows read_own users to read other users’ file content

Medium 4.3 Published 26 Mar 2026 Updated 26 Mar 2026

Authenticated users with read_own permissions can improperly access other users' file content via the snippet API endpoint.

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-2026-33477?

CVE-2026-33477 is a medium-severity missing authorization vulnerability in error311 FileRise, published on 26 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

FileRise is a self-hosted web-based file manager with multi-file upload, editing, and batch operations. In versiosn 2.3.7 through 3.10.0, the file snippet endpoint `/api/file/snippet.php` allows an authenticated user with only `read_own` access to a folder to retrieve snippet content from files uploaded by other users in the same folder. This is a server-side authorization flaw in the `read_own` enforcement for hover previews. Version 3.11.0 fixes the issue.

Weakness: CWE-863

Which versions are affected by CVE-2026-33477?

It affects 1 product.

Products include Filerise Filerise.

How do I fix CVE-2026-33477?

No fix has been published for CVE-2026-33477 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-2026-33477 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33477 exists.

Sources

Also known as GHSA-62wx-vp78-2p83.