CVE-2026-90769

EUVD-2026-76990
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.
SSRF
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulnCheckCNA
7.7 HIGH
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
lfnovoopen-notebook
𝑥
< 1.11.0
CNA
Common Weakness Enumeration
References
https://github.com/lfnovo/open-notebook
https://github.com/lfnovo/open-notebook/blob/8889087e317177d7b6e286342ab34e0c9c01d43e/api/routers/sources.py
https://github.com/lfnovo/open-notebook/commit/9045ea50196927eac7de647bb5b7009349236fb4
https://github.com/lfnovo/open-notebook/issues/1284
https://www.vulncheck.com/advisories/open-notebook-before-1.11.0-server-side-request-forgery-via-link-source