CVE-2026-41571: CWE-287: Improper Authentication in enchant97 note-mark
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.
AI Analysis
Technical Summary
In enchant97 note-mark version 0.19.2, the authentication function IsPasswordMatch in backend/db/models.go improperly handles users with no stored password by falling back to a hard-coded bcrypt("null") hash. OIDC-registered users are created with empty passwords, enabling an unauthenticated attacker to submit the password "null" and receive a valid session for that user. This authentication bypass vulnerability is classified as CWE-287 and has a CVSS 3.1 score of 9.4 (critical). The issue was fixed in version 0.19.3.
Potential Impact
An unauthenticated attacker can bypass authentication and gain a valid session for any OIDC-registered user with an empty password by submitting the password "null". This leads to full compromise of the affected user's account, including confidentiality and integrity impacts, with limited availability impact. The vulnerability is critical due to its ease of exploitation and high impact on confidentiality and integrity.
Mitigation Recommendations
This vulnerability has been patched in enchant97 note-mark version 0.19.3. Users and administrators should upgrade to version 0.19.3 or later to remediate this issue. No other mitigation is indicated or required as the fix addresses the root cause.
CVE-2026-41571: CWE-287: Improper Authentication in enchant97 note-mark
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
In enchant97 note-mark version 0.19.2, the authentication function IsPasswordMatch in backend/db/models.go improperly handles users with no stored password by falling back to a hard-coded bcrypt("null") hash. OIDC-registered users are created with empty passwords, enabling an unauthenticated attacker to submit the password "null" and receive a valid session for that user. This authentication bypass vulnerability is classified as CWE-287 and has a CVSS 3.1 score of 9.4 (critical). The issue was fixed in version 0.19.3.
Potential Impact
An unauthenticated attacker can bypass authentication and gain a valid session for any OIDC-registered user with an empty password by submitting the password "null". This leads to full compromise of the affected user's account, including confidentiality and integrity impacts, with limited availability impact. The vulnerability is critical due to its ease of exploitation and high impact on confidentiality and integrity.
Mitigation Recommendations
This vulnerability has been patched in enchant97 note-mark version 0.19.3. Users and administrators should upgrade to version 0.19.3 or later to remediate this issue. No other mitigation is indicated or required as the fix addresses the root cause.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-21T14:15:21.957Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69f8e3e0cbff5d86103e465b
Added to database: 5/4/2026, 6:22:24 PM
Last enriched: 5/4/2026, 6:36:19 PM
Last updated: 5/5/2026, 12:20:35 AM
Views: 10
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