CVE-2026-33070 FileRise has Unauthenticated Share Link Deletion

Low 3.7 Published 20 Mar 2026 Updated 25 Mar 2026

Unauthenticated attackers can delete arbitrary file share links in FileRise, causing denial of service for shared file access.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-33070?

CVE-2026-33070 is a low-severity missing authorization vulnerability in error311 FileRise, published on 20 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

FileRise is a self-hosted web file manager / WebDAV server. In versions prior to 3.8.0, a missing-authentication vulnerability in the deleteShareLink endpoint allows any unauthenticated user to delete arbitrary file share links by providing only the share token, causing denial of service to shared file access. The POST /api/file/deleteShareLink.php endpoint calls FileController::deleteShareLink() which performs no authentication, authorization, or CSRF validation before deleting a share link. Any anonymous HTTP client can destroy share links. This issue is fixed in version 3.8.0.

Weakness: CWE-306

Which versions are affected by CVE-2026-33070?

It affects 1 product.

Products include Filerise Filerise.

How do I fix CVE-2026-33070?

No fix has been published for CVE-2026-33070 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-2026-33070 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33070 exists.

Sources

Also known as GHSA-vh5m-w36c-99xv.