CVE-2026-90769
High
Description
Open Notebook before 1.11.0 fails to validate the URL parameter in POST /api/sources endpoint, allowing authenticated users to perform server-side requests to internal services. Attackers can supply arbitrary URLs to read cloud metadata, internal network services, and localhost-bound services through the application server's direct HTTP requests.
SeverityHigh
CVSS7.7
Exploit probability—
ProductLfnovo Open-notebook
PublishedSep 13, 2026
First seenSep 13, 2026
Weakness typeCWE-918Server-side request forgery (SSRF)
How to fix
Update
- lfnovo open-notebook1.11.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| lfnovo open-notebook | v < 1.11.0 | 1.11.0 |
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.