CVE-2026-90769

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

Published Sep 13, 2026 CVSS 4.0 · 8.3 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Open Notebook before 1.11.0 Server-Side Request Forgery via link-source
First Time appeared Lfnovo
Lfnovo open-notebook
Weaknesses CWE-918
CPEs cpe:2.3:a:lfnovo:open-notebook:*:*:*:*:*:*:*:*
Vendors & Products Lfnovo
Lfnovo open-notebook
References
Metrics cvssV3_1

{'score': 7.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N'}

cvssV4_0

{'score': 8.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Sep 24, 2026, 2:21 PM
Reserved
Sep 13, 2026, 10:14 AM
Status
Deferred
Published
Sep 13, 2026, 11:17 AM
Modified
Sep 24, 2026, 8:43 PM