CVE-2026-40265— Note Mark has Broken Access Control on Asset Download
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I. Basic Information for CVE-2026-40265
Vulnerability Information
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Vulnerability Title
Note Mark has Broken Access Control on Asset Download
Source: NVD (National Vulnerability Database)
Vulnerability Description
Note Mark is an open-source note-taking application. In versions 0.19.1 and prior, the asset download endpoint at /api/notes/{noteID}/assets/{assetID} is registered without authentication middleware, and the backend query does not verify ownership or book visibility. An unauthenticated user who knows a valid note ID and asset ID can retrieve the full contents of private note assets without authentication, regardless of whether the associated book is public or private. This issue has been fixed in version 0.19.2.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制缺失
Source: NVD (National Vulnerability Database)
Vulnerability Title
Note Mark 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Note Mark是Leo Spratt个人开发者的一个基于网络的Markdown笔记应用程序。 Note Mark 0.19.1及之前版本存在安全漏洞，该漏洞源于/api/notes/{noteID}/assets/{assetID}处的资产下载端点未注册身份验证中间件，且后端查询未验证所有权或书籍可见性，可能导致未经身份验证的用户在知道有效笔记ID和资产ID的情况下检索私有笔记资产的完整内容。
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
II. Public POCs for CVE-2026-40265
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Same Patch Batch · enchant97 · 2026-04-16 · 3 CVEs total
| CVE-2026-40262 | 8.7 HIGH | Note Mark has Stored XSS via Unrestricted Asset Upload |
| CVE-2026-40263 | 3.7 LOW | Note Mark: Username Enumeration via Login Endpoint Timing Side-Channel |
IV. Related Vulnerabilities
Same product: note-mark
- CVE-2026-41572
Note Mark: Unauthenticated read of notes and assets in soft- - CVE-2026-41571
Note Mark: OIDC-registered users authenticated by submitting - CVE-2026-40263
Note Mark: Username Enumeration via Login Endpoint Timing Si - CVE-2026-40262
Note Mark has Stored XSS via Unrestricted Asset Upload - CVE-2024-41819
Note Mark has a stored XSS in the note link href attribute
Same vendor: enchant97
- CVE-2026-41572
Note Mark: Unauthenticated read of notes and assets in soft- - CVE-2026-41571
Note Mark: OIDC-registered users authenticated by submitting - CVE-2026-40263
Note Mark: Username Enumeration via Login Endpoint Timing Si - CVE-2026-40262
Note Mark has Stored XSS via Unrestricted Asset Upload - CVE-2024-41819
Note Mark has a stored XSS in the note link href attribute
Same weakness: CWE-862
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WordPress TheCartPress 1.5.3.6 Privilege Escalation Unauthen - CVE-2025-15634
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Kirby: User avatar creation, replacement and deletion are no - CVE-2026-42137
Kirby: `pages.access/list` and `files.access/list` permissio
V. Comments for CVE-2026-40265
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