Is CVE-2026-82233 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-82233?

CVE-2026-82233 has a CVSS v3 severity of MEDIUM (5.7).

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CVE-2026-82233

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.