CVE-2026-72789
SiYuan before v3.7.4 Authentication Bypass via Encrypted Notebooks
- State
- Published
- Severity
- 9.2 Critical
- Published
- Aug 12, 2026
- Updated
- Aug 14, 2026
- Reserved
- Aug 10, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.2 Critical | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N | VulnCheck |
| 3.1 | 8.6 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N | VulnCheck |
Weaknesses
- CWE-862 Missing Authorization
Affected Products
| Product | Versions |
|---|---|
siyuansiyuan-note |
|
References
- GitHub Security Advisory (GHSA-v684-q882-jgmq)vendor-advisory
- VulnCheck Advisory: SiYuan before v3.7.4 Authentication Bypass via Encrypted Notebooksthird-party-advisory
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