CVE-2026-33589 Arbitrary File Read via Local File Inclusion (LFI)

High 8.2 Published 7 May 2026 Updated 7 May 2026

Attackers can read local files from the Docker container via path traversal in the file upload feature of Open Notebook.

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

What is CVE-2026-33589?

CVE-2026-33589 is a high-severity path traversal vulnerability in Open Notebook, published on 7 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Lack of user input validation in the file upload functionality of Open Notebook v1.8.3 allows the application user to access local files content from the docker container via path traversal.

Weakness: CWE-20

Which versions are affected by CVE-2026-33589?

It affects 1 product.

Products include Lfnovo Open-Notebook.

How do I fix CVE-2026-33589?

No fix has been published for CVE-2026-33589 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2026-33589 being exploited?

There is no known exploitation of CVE-2026-33589 in the wild and no public exploit code.

Sources

Also known as GHSA-842v-h4cj-r646, GHSA-xfv3-v32f-xwfc.