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CVE-2026-90769— Open Notebook before 1.11.0 Server-Side Request Forgery via link-source

Quick assessment

Affected
lfnovo open-notebook
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Luis Novo Open Notebook是Luis Novo个人开发者的一款可整理笔记与文档、构建个人知识库并进行智能问答的笔记软件。 Luis Novo Open Notebook 1.11.0之前版本存在服务端请求伪造漏洞，该漏洞源于未验证POST /api/sources端点中的URL参数，可能导致已认证用户进行服务端请求伪造，通过应用程序服务器的直接HTTP请求读取云元数据、内部网络服务及本地绑定服务。

CVSS 7.7 · High EPSS 0.41% · P34

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle

Affected Version Matrix 1

VendorProduct Version RangeStatus
lfnovo open-notebook < 1.11.0 affected
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I. Basic Information for CVE-2026-90769

Vulnerability Information
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Vulnerability Title
Open Notebook before 1.11.0 Server-Side Request Forgery via link-source
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Luis Novo Open Notebook 服务端请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Luis Novo Open Notebook是Luis Novo个人开发者的一款可整理笔记与文档、构建个人知识库并进行智能问答的笔记软件。 Luis Novo Open Notebook 1.11.0之前版本存在服务端请求伪造漏洞，该漏洞源于未验证POST /api/sources端点中的URL参数，可能导致已认证用户进行服务端请求伪造，通过应用程序服务器的直接HTTP请求读取云元数据、内部网络服务及本地绑定服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
lfnovo open-notebook 0 ~ 1.11.0 -

II. Public POCs for CVE-2026-90769

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III. Intelligence Information for CVE-2026-90769

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Patches & Fixes for CVE-2026-90769 (1)

Vendor Advisories for CVE-2026-90769 (1)

Security Blog Posts for CVE-2026-90769 (1)

Other References for CVE-2026-90769 (1)

IV. Related Vulnerabilities

Same weakness: CWE-918

V. Comments for CVE-2026-90769

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