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OpenAdvisories
Critical · 9.4 CVE-2026-41571 EUVD-2026-27051GHSA-pxf8-6wqm-r6hhGO-2026-5557

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

Published May 4, 2026 · Updated May 4, 2026 · Assigned by GitHub_M

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.

Affected products

VendorProductAffectedFixed
enchant97 note-mark = 0.19.2 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
openSUSE Leap 16.0 govulncheck-vulndb 0.0.20260723T184607-160000.1.1 openSUSE-SU-2026:21483-1

Affected packages

EcosystemPackageAffectedFixedRecord
Go github.com/enchant97/note-mark/backend < 0.0.0-20260417132909-dea5530cc989 0.0.0-20260417132909-dea5530cc989 GHSA-pxf8-6wqm-r6hh

Advisories 1

References