CVE-2026-73607

MEDIUM CVSS 4.0: 6.9 EPSS 0.19%
Updated Aug 15, 2026
B3Log
Parameter Value
CVSS 6.9 (MEDIUM)
Affected Versions before 3.7.4
Fixed In 3.7.4
Type CWE-862 (Missing Authorization)
Vendor B3Log
Public PoC No

SiYuan versions before v3.7.4 contain an information disclosure vulnerability in the /api/storage/getOutlineStorage endpoint that performs no authorization checks. Attackers can retrieve outline state including heading identifiers for any document by supplying its identifier, even for documents forbidden to the requester.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
Low
Partial data leak
Integrity
None
No data modification
Availability
None
No disruption

CVSS Vector v4.0

Vulnerable Products 1

Configuration From (including) Up to (excluding)
B3log Siyuan
cpe:2.3:a:b3log:siyuan:*:*:*:*:*:*:*:*
3.7.4