CVE-2026-33588 Arbitrary File Write Through Path Traversal

High 7.0 Published 7 May 2026 Updated 7 May 2026

Attackers can write arbitrary files to 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-2026-33588?

CVE-2026-33588 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 create or modify files on the docker container via path traversal.

Weakness: CWE-20

Which versions are affected by CVE-2026-33588?

It affects 1 product.

Products include Lfnovo Open-Notebook.

How do I fix CVE-2026-33588?

No fix has been published for CVE-2026-33588 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-2026-33588 being exploited?

There is no known exploitation of CVE-2026-33588 in the wild and no public exploit code.

Sources

Also known as GHSA-c7wf-4r4p-4766, GHSA-x4q2-89g5-594v.