CVE-2026-41571 | THREATINT

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.

PUBLISHED Reserved 2026-04-21 | Published 2026-05-04 | Updated 2026-05-04 | Assigner GitHub_M

CRITICAL: 9.4CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

Problem types

CWE-287: Improper Authentication

Product status

= 0.19.2

affected

References

github.com/...e-mark/security/advisories/GHSA-pxf8-6wqm-r6hh exploit

github.com/...e-mark/security/advisories/GHSA-pxf8-6wqm-r6hh

github.com/enchant97/note-mark/releases/tag/v0.19.3

cve.org (CVE-2026-41571)

nvd.nist.gov (CVE-2026-41571)

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