Note Mark: Username Enumeration via Login Endpoint Timing Side-Channel

Note Mark is an open-source note-taking application. In versions 0.19.1 and prior, the login endpoint performs bcrypt password verification only when the supplied username exists, returning immediately for nonexistent usernames. This timing discrepancy allows unauthenticated attackers to enumerate valid usernames by measuring response times, enabling targeted credential attacks. This issue has been fixed in version 0.19.2.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

通过时间差异性导致的信息暴露

Note Mark 安全漏洞

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，该漏洞源于登录端点仅当提供的用户名存在时才执行bcrypt密码验证，可能导致未经身份验证的攻击者通过测量响应时间来枚举有效用户名。

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