SiYuan through 3.8.4 fails to escape heading style attributes when rendering outline and bookmark dock HTML, allowing stored cross-site scripting. Attackers can supply crafted notebooks or call administrative endpoints to inject malicious style values that execute in the Electron renderer with full system access.
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
Active
User action required
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
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/app/src/util/Tree.ts#L133
disclosure@vulncheck.com
https://github.com/siyuan-note/siyuan/blob/v3.8.4/app/src/util/Tree.ts#L194
disclosure@vulncheck.com
https://github.com/siyuan-note/siyuan/blob/v3.8.4/kernel/model/render.go#L71-L76
disclosure@vulncheck.com
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-928g-4hfq-qwvx
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/siyuan-through-3.8.4-stored-xss-via-headin…
disclosure@vulncheck.com