CVE-2026-41571
CRITICALNote Mark: OIDC-registered users authenticated by submitting password "null"
Title source: cnaDescription
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.
References (2)
Core 2
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/enchant97/note-mark/security/advisories/GHSA-pxf8-6wqm-r6hh
X_Refsource_Misc x_refsource_misc
https://github.com/enchant97/note-mark/releases/tag/v0.19.3
Scores
CVSS v3
9.4
EPSS
0.0030
EPSS Percentile
21.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
total
Details
CWE
CWE-287
Status
published
Products (2)
enchant97/note-mark
0 - 0.0.0-20260417132909-dea5530cc989Go
enchant97/note-mark
= 0.19.2
Published
May 04, 2026
Tracked Since
May 05, 2026