Vulnerability in Siyuan-Note Siyuan
CVE-2026-68584
SiYuan versions before v3.7.3 contain an authentication bypass vulnerability in publish mode where content-returning endpoints getHeadingChildrenDOM, getHeading*Transaction, and getBacklinkDoc perform no password check despite protecting the primary getDoc endpoint. Anonymous attackers can retrieve full content of password-protected documents by obtaining internal block IDs from reader-accessible endpoints and calling unprotected content endpoints to bypass the password gate.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (45.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 45.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Siyuan-Note Siyuan — versions 0, 3.7.3
Weakness classification (CWE)
References
- github.com/siyuan-note/siyuan/security/advisories/GHSA-7j72-f6wg-cxw6 (vendor-advisory)
- www.vulncheck.com/advisories/siyuan-before-authentication-bypass-via-content-en… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-68584?
- CVE-2026-68584 is a high-severity vulnerability in Siyuan-Note Siyuan, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 8.6/10. Published 2026-08-03.
- How severe is CVE-2026-68584?
- High severity. CVSS v3 base score is 8.6 out of 10.