---
id: CVE-2026-118680
title: SiYuan 3.8.7 through 3.8.8 Path Traversal via GLOBALROOT Alias
summary: >-
  SiYuan 3.8.7 through 3.8.8 fails to normalize Windows GLOBALROOT
  device-namespace aliases, bypassing the IsSensitivePath denylist. Attackers
  can invoke importStdMd with a GLOBALROOT-prefixed path to copy the API token
  and TLS private key…
severity: medium
cvss: 4.4
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-22
vendor: siyuan-note
product: siyuan
affected:
  - siyuan >= 3.8.7 <= 3.8.8
published: '2026-10-28'
updated: '2026-10-28'
sourceUpdated: '2026-10-28T18:59:51.831Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-118680'
references:
  - url: >-
      https://github.com/siyuan-note/siyuan/security/advisories/GHSA-gg3p-r4g8-vxg2
    label: GitHub Security Advisory (GHSA-gg3p-r4g8-vxg2)
  - url: >-
      https://www.vulncheck.com/advisories/siyuan-3.8.7-through-3.8.8-path-traversal-via-globalroot-alias
    label: >-
      VulnCheck Advisory: SiYuan 3.8.7 through 3.8.8 Path Traversal via
      GLOBALROOT Alias
tags:
  - cve.org
epss: 0.00459
epssPercentile: 0.39739
ingestedAt: '2026-10-29T15:37:07.545Z'
---

## Overview

SiYuan 3.8.7 through 3.8.8 fails to normalize Windows GLOBALROOT device-namespace aliases, bypassing the IsSensitivePath denylist. Attackers can invoke importStdMd with a GLOBALROOT-prefixed path to copy the API token and TLS private key into the publicly served assets directory.

## Affected

- `siyuan >= 3.8.7 <= 3.8.8`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.