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OpenAdvisories
High · 7.7 CVE-2026-90769 EUVD-2026-76990GHSA-wr7p-6rrg-8m28

Open Notebook before 1.11.0 Server-Side Request Forgery via link-source

Published Sep 13, 2026 · Updated Sep 24, 2026 · Assigned by VulnCheck

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.

Affected products

VendorProductAffectedFixed
lfnovo open-notebook < 1.11.0 1.11.0

References