CVE-2026-41571

Note Mark: OIDC-registered users authenticated by submitting password "null"

Published May 4, 2026 CVSS 3.1 · 9.4 Critical EPSS < 1% KEV · Not listed
Description
Note Mark is an open-source note-taking application. In version 0.19.2, IsPasswordMatch in backend/db/models.go falls back to a hard-coded bcrypt("null") placeholder whenever a user has no stored password. OIDC-registered users are created with an empty password, so anyone who submits password: "null" to the internal login endpoint receives a valid session for that user. The bypass is unauthenticated and requires no user interaction. This issue has been patched in version 0.19.3.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-pxf8-6wqm-r6hh Note Mark: OIDC-registered users authenticated by submitting password "null"
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Enchant97
Enchant97 note-mark
Vendors & Products Enchant97
Enchant97 note-mark
Type Values Removed Values Added
Description Note Mark is an open-source note-taking application. In version 0.19.2, IsPasswordMatch in backend/db/models.go falls back to a hard-coded bcrypt("null") placeholder whenever a user has no stored password. OIDC-registered users are created with an empty password, so anyone who submits password: "null" to the internal login endpoint receives a valid session for that user. The bypass is unauthenticated and requires no user interaction. This issue has been patched in version 0.19.3.
Title Note Mark: OIDC-registered users authenticated by submitting password "null"
Weaknesses CWE-287
References
Metrics cvssV3_1

{'score': 9.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
May 4, 2026, 8:20 PM
Reserved
Apr 21, 2026, 2:15 PM
Status
Deferred
Published
May 4, 2026, 6:16 PM
Modified
Oct 26, 2026, 7:10 PM