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
Affected Vendors & Products
References
History
Fri, 17 Apr 2026 13:15:00 +0000
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ssvc
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Fri, 17 Apr 2026 08:15:00 +0000
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| First Time appeared |
Enchant97
Enchant97 note-mark |
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| Vendors & Products |
Enchant97
Enchant97 note-mark |
Fri, 17 Apr 2026 00:00:00 +0000
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| 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. | |
| Title | Note Mark: Username Enumeration via Login Endpoint Timing Side-Channel | |
| Weaknesses | CWE-208 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-04-16T23:53:50.195Z
Updated: 2026-04-17T12:23:42.042Z
Reserved: 2026-04-10T17:31:45.787Z
Link: CVE-2026-40263
Updated: 2026-04-17T12:23:32.718Z
Status : Deferred
Published: 2026-04-17T01:17:40.137
Modified: 2026-04-17T15:29:25.583
Link: CVE-2026-40263
No data.