Critical 9.4Published May 4, 2026

CVE-2026-41571Note Mark: OIDC-registered users authenticated by submitting password "null"

Updated under an hour ago (Oct 25, 2026, 8:30 PM ET)

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It affects enchant97 note-mark. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for enchant97 note-mark

Exploited in the last 30 days

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.

CVSS: 9.4 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
Weakness (CWE): CWE-287
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: May 4, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

enchant97 note-mark enchant97:note_mark (from the name)	= 0.19.2	CNA record

References

https://github.com/enchant97/note-mark/security/advisories/GHSA-pxf8-6wqm-r6hhx-refsource-confirm
https://github.com/enchant97/note-mark/releases/tag/v0.19.3x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.