Vulnerability · Published Aug 12, 2026 · Assigned by VulnCheck
CVE-2026-72789SiYuan before v3.7.4 Authentication Bypass via Encrypted Notebooks
High 8.6
In plain English
A high-severity missing authorization in siyuan from siyuan-note. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)8.6High
Exploit odds (30 days)0.4%top 69.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
SiYuan before v3.7.4 fails to properly validate publish access for encrypted notebooks, treating them as publicly accessible by default. Anonymous readers can enumerate and retrieve fully decrypted document content from unlocked encrypted notebooks through the publish API without authentication or key material.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/siyuan-note/siyuan/kernel | 0.0.0-20260726020813-a25c2dd06aae | GHSA-v684-q882-jgmq |
| Go | github.com/siyuan-note/siyuan/kernel | 0.0.0-20260726020813-a25c2dd06aae | GO-2026-6434 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| siyuan-note | siyuan | 0 – before 3.7.4 |
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
References
- GitHub Security Advisory (GHSA-v684-q882-jgmq) vendor-advisory
- VulnCheck Advisory: SiYuan before v3.7.4 Authentication Bypass via Encrypted Notebooks third-party-advisory