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Advisories

SiYuan before v3.7.3 Authentication Bypass via Content Endpoints

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severity
high
date
Affecting

  • siyuan >= 0, < 3.7.3

CWE
  • CWE-288 Authentication Bypass Using an Alternate Path or Channel
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
Credit
Shirshakhtml
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.

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