CVE-2026-82650
SiYuan before v3.8.1 Path Traversal via /api/template/render
CVSS Score
4.4
EPSS Score
0.0%
EPSS Percentile
0th
SiYuan 3.8.0 contains a path traversal / sensitive file exposure vulnerability in the RenderTemplate function (kernel/model/template.go), reachable via the POST /api/template/render endpoint (kernel/api/template.go). The endpoint restricts the supplied path only to the workspace directory (util.IsAbsPathInWorkspace) but, unlike the file API's refuseToAccess() blocklist, applies no sensitive-path exclusion. This allows an authenticated attacker to read sensitive workspace files, including conf/conf.json, which contains the API token and cookie signing key. The issue is fixed in v3.8.1.
| CWE | CWE-668 |
| Vendor | siyuan-note |
| Product | siyuan |
| Published | Aug 30, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
siyuan-note / siyuan
0 < 3.8.1
References
Credits
🔍 alham-rizvi