CVE-2026-82233
SiYuan before v3.8.1 Path Traversal via asset.upload
- State
- Published
- Severity
- 6.9 Medium
- Published
- Aug 28, 2026
- Updated
- Aug 31, 2026
- Reserved
- Aug 28, 2026
Description
SiYuan before v3.8.1 contains a path traversal vulnerability in the asset.upload MCP tool that accepts arbitrary absolute file paths without workspace boundary validation. Attackers can induce the AI Agent to upload sensitive files such as SSH keys or credentials from outside the workspace into the asset directory through prompt injection.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 5.7 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N | VulnCheck |
Weaknesses
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Products
| Product | Versions |
|---|---|
siyuansiyuan-note |
|
References
- GitHub Security Advisory (GHSA-p23f-cm6q-2qp8)vendor-advisory
- VulnCheck Advisory: SiYuan before v3.8.1 Path Traversal via asset.uploadthird-party-advisory
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