SiYuan v3.7.0 before v3.8.6 contains an absolute path traversal vulnerability in the kernel's private plugin HTTP server, which passes a kernel plugin handler's ResponseFile.Path to gin's Context.File without validation. Attackers supplying a malicious kernel plugin can return an absolute path to read any file readable by the SiYuan process, including the API token and conf.json.
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
None
No data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
References 3
https://github.com/siyuan-note/siyuan/commit/c6494375ea40ee973f430f0e85d50f1862…
disclosure@vulncheck.com
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-phmw-4rgv-r4xv
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/siyuan-3.7.0-before-3.8.6-arbitrary-file-r…
disclosure@vulncheck.com