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Vulnerabilities CVE-2026-68584

CVE-2026-68584

Critical
Open
TLP:CLEAR

SiYuan before v3.7.3 Authentication Bypass via Content Endpoints

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Description

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.

Details

CVSS Score
9.2
EPSS Score
0.31%

23.6th percentile

CVSS 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
Confidence
90%
Published
Aug 3, 2026
Last Modified
Aug 3, 2026
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