CVE-2026-41571— Note Mark: OIDC-registered users authenticated by submitting password "null"
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I. Basic Information for CVE-2026-41571
Vulnerability Information
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Vulnerability Title
Note Mark: OIDC-registered users authenticated by submitting password "null"
Source: NVD (National Vulnerability Database)
Vulnerability Description
Note Mark is an open-source note-taking application. In version 0.19.2, IsPasswordMatch in backend/db/models.go falls back to a hard-coded bcrypt("null") placeholder whenever a user has no stored password. OIDC-registered users are created with an empty password, so anyone who submits password: "null" to the internal login endpoint receives a valid session for that user. The bypass is unauthenticated and requires no user interaction. This issue has been patched in version 0.19.3.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
认证机制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Note Mark 授权问题漏洞
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 0.19.2版本存在授权问题漏洞，该漏洞源于IsPasswordMatch函数回退到硬编码的bcrypt空密码占位符，可能导致未经身份验证的攻击者提交密码为空时获得有效会话。
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)
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Affected Products
II. Public POCs for CVE-2026-41571
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- Release V0.19.3 · enchant97/note-mark · GitHubx_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-41571
IV. Related Vulnerabilities
Same product: note-mark
- CVE-2026-41572
Note Mark: Unauthenticated read of notes and assets in soft- - CVE-2026-40265
Note Mark has Broken Access Control on Asset Download - 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-2026-40265
Note Mark has Broken Access Control on Asset Download - 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-287
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