CVE-2026-40263

LowCVSS 3.7/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 3.7/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Weakness enumeration

CWE-208

Affected software

No affected versions have been published.

Timeline

Published: Apr 17, 2026
Last modified: Jun 17, 2026
NVD status: Deferred

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