SiYuan versions through 3.8.4 fail to enforce publish access control in the getDynamicIcon endpoint, allowing read-only token holders to access document metadata. Attackers can call the endpoint with type=8 and crafted content to read block titles, names, aliases, and hierarchical paths of restricted documents via template injection.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic 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
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
B3log Siyuan
cpe:2.3:a:b3log:siyuan:*:*:*:*:*:*:*:*
|
— |
<= 3.8.4
|
References 6
https://github.com/siyuan-note/siyuan
disclosure@vulncheck.com
https://github.com/siyuan-note/siyuan/blob/v3.8.4/kernel/api/icon.go#L546-L549
disclosure@vulncheck.com
https://github.com/siyuan-note/siyuan/blob/v3.8.4/kernel/api/router.go#L51
disclosure@vulncheck.com
https://github.com/siyuan-note/siyuan/blob/v3.8.4/kernel/model/template.go#L485…
disclosure@vulncheck.com
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-whcx-xxqh-c838
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/siyuan-through-3.8.4-access-control-bypass…
disclosure@vulncheck.com