CVE-2026-28201: Lfnovo Open-Notebook

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

An improper input validation, together with an overly permissive default CORS configuration in Open Notebook v1.8.1 allows remote attacker to trick a legitimate user to alter or delete arbitrary database entries via specially crafted malicious URL. Depending on the deployment, data exfiltration is also possible.

Affected products

• Lfnovo Open-Notebook: before 1.8.3 (fixed in 1.8.3)

Published 2026-05-07. Last modified 2026-06-17.