CVE-2026-28201

High

Description

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.

SeverityHigh

CVSS7.8

Exploit probability—

ProductLfnovo Open-notebook

PublishedMay 7, 2026

First seenMay 7, 2026

Weakness typeCWE-20Improper input validation CWE-917Expression language injection CWE-352Cross-site request forgery (CSRF)

How to fix

Update

lfnovo open-notebook1.8.3 or later

Vendor advisories

github.com/lfnovo/open-notebook/security/advisories/GHSA-5wj9-f8q5-8f9c

Affected products

Product	Affected versions	Fixed in
lfnovo open-notebook	v < 1.8.3	1.8.3

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.