What is CVE-2026-72806?

CVE-2026-72806 is a medium-severity vulnerability in Siyuan-note Siyuan, classified under Missing Authorization. CVSS score: 5.8/10. Published 2026-08-12.

How severe is CVE-2026-72806?

Medium severity. CVSS v3 base score is 5.8 out of 10.

Auth bypass in Siyuan-note Siyuan

CVE-2026-72806

SiYuan versions before v3.7.4 contain an authentication bypass vulnerability in the FilterViewByPublishAccess filter that fails to check publish password protection when rendering attribute views and database rows. Unauthenticated readers…

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N.

Affected products

Siyuan-note Siyuan — versions 0, 3.7.4

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-72806?: CVE-2026-72806 is a medium-severity vulnerability in Siyuan-note Siyuan, classified under Missing Authorization. CVSS score: 5.8/10. Published 2026-08-12.
How severe is CVE-2026-72806?: Medium severity. CVSS v3 base score is 5.8 out of 10.