SiYuan before v3.7.4 Authentication Bypass via Encrypted Notebooks

Advisories

SiYuan before v3.7.4 Authentication Bypass via Encrypted Notebooks

severity: high
date: 8/12/2026
Affecting: siyuan >= 0, < 3.7.4
CVE: CVE-2026-72789
CWE: CWE-862 Missing Authorization
CVSS: 9.2
CVSS V4 Vector: 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
References: GitHub Security Advisory (GHSA-v684-q882-jgmq)
Credit: shirshakopencti
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.

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