SEPTEMBER 17, 2026
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Case File

CVE-2026-82233

MEDIUM · CVSS 5.7 EPSS 0.29% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-28 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

SiYuan versions prior to 3.8.1 are vulnerable to a path traversal flaw in the asset.upload MCP tool, allowing attackers to exploit the lack of workspace boundary validation to upload sensitive files, including SSH keys and credentials. This vulnerability poses a risk of unauthorized access to sensitive information, making it critical for organizations using affected versions to prioritize patching. Users of SiYuan should assess their exposure and implement necessary updates to mitigate potential data breaches.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-82233
Severity
MEDIUM
CVSS
5.7
EPSS
0.29%

Original NVD 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.