CVE-2026-82233

Medium

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.

SeverityMedium

CVSS5.7

Exploit probability35. percentile0.4%

ProductGithub.com/siyuan-note/siyuan/kernel

PublishedAug 28, 2026

First seenAug 28, 2026

Weakness typeCWE-22Path traversal

How to fix

Update

github.com/siyuan-note/siyuan/kernel0.0.0-20260813142104-b26a4a307b8a or later

Vendor advisories

github.com/siyuan-note/siyuan/security/advisories/GHSA-p23f-cm6q-2qp8

Affected products

Product	Affected versions	Fixed in
github.com/siyuan-note/siyuan/kernelGo	v < 0.0.0-20260813142104-b26a4a307b8a	0.0.0-20260813142104-b26a4a307b8a

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