CVE-2026-40263

Published: Apr 17, 2026 Last Modified: Apr 17, 2026
ExploitDB:
Other exploit source:
Google Dorks:
LOW 3,7
Source: [email protected]
Attack Vector: network
Attack Complexity: high
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: low
Integrity: none
Availability: none

Description

AI Translation Available

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.

208

Observable Timing Discrepancy

Incomplete
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Confidentiality Access Control
Potential Impacts:
Read Application Data Bypass Protection Mechanism
Applicable Platforms
All platforms may be affected
View CWE Details
https://github.com/enchant97/note-mark/commit/cf4c6f6acf70b…
https://github.com/enchant97/note-mark/commit/cf4c6f6acf70b569d80396d323b067c00…
https://github.com/enchant97/note-mark/security/advisories/…
https://github.com/enchant97/note-mark/security/advisories/GHSA-w6m9-39cv-2fwp