What is CVE-2026-33589?

CVE-2026-33589 is a medium-severity vulnerability in Lfnovo Open-notebook, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2026-05-07.

How severe is CVE-2026-33589?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Improper input validation in Lfnovo Open-notebook

CVE-2026-33589

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.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.001 (18.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Lfnovo Open-notebook
Open Notebook — versions 0

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

a6d3dc9e-0591-4a13-bce7-0f5b31ff6158 (vendor-advisory, Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2026-33589?: CVE-2026-33589 is a medium-severity vulnerability in Lfnovo Open-notebook, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2026-05-07.
How severe is CVE-2026-33589?: Medium severity. CVSS v3 base score is 6.5 out of 10.