CVE-2026-40263

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Source

https://cve.org/CVERecord?id=CVE-2026-40263

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40263.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-40263

Aliases

Published

2026-04-16T23:53:50.195Z

Modified

2026-07-08T08:11:24.338503059Z

Severity

3.7 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS Calculator

Summary

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

Details

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.

Database specific

{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40263.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-208"
    ]
}

References

Affected packages

Git / github.com/enchant97/note-mark

Affected ranges

Type

GIT

Repo

https://github.com/enchant97/note-mark

Events

Introduced

Fixed

cf4c6f6acf70b569d80396d323b067c00d45c034

Database specific

{
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.19.2"
        }
    ]
}

Affected versions

v0.*

v0.10.0

v0.11.0

v0.11.1

v0.12.0

v0.12.1

v0.12.2

v0.13.0

v0.13.1

v0.14.0

v0.14.1

v0.15.0

v0.15.1

v0.15.2

v0.15.3

v0.15.4

v0.16.0

v0.16.1

v0.16.2

v0.16.3

v0.17.0

v0.17.1

v0.18.0

v0.19.0

v0.19.1

v0.6.0

v0.6.0-alpha

v0.6.0-alpha.2

v0.6.0-alpha.3

v0.6.0-alpha.4

v0.7.0

v0.8.0

v0.9.0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40263.json"