by Kastro
Paper/Archive/CVE-2026-41571

CVE-2026-41571

enchant97 note-mark — Note Mark: OIDC-registered users authenticated by submitting password "null"

EPSS 0.4%public exploitCVSS 9.4
critical.is priorityof 100
44
CVSS 9.4 (CNA)9.4 / 10 × 3028.2Not in CISA KEV+300.0EPSS percentile 30.5.305 × 206.1Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
note-mark= 0.19.2–CNA

Scores by source

GitHub_M (CNA)9.4CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

exploitgithub.com/enchant97/note-mark/security/advisories/GHSA-pxf8-6wqm-r6hhrefgithub.com/enchant97/note-mark/releases/tag/v0.19.3