---
id: CVE-2026-85583
title: >-
  SiYuan versions before v3.8.2 contain a path traversal vulnerability in the
  reader-accessible file-read endpoint that follows symlinks when opening
  authorized asset paths
summary: >-
  SiYuan versions before v3.8.2 contain a path traversal vulnerability in the
  reader-accessible file-read endpoint that follows symlinks when opening
  authorized asset paths. Attackers with reader role can request a logical asset
  under data…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-59
vendor: siyuan-note
product: siyuan
affected:
  - siyuan < 3.8.2
published: '2026-09-04'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T20:16:58.007'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-85583'
references:
  - url: >-
      https://github.com/siyuan-note/siyuan/security/advisories/GHSA-g7gf-v79m-jwrm
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/siyuan-before-3.8.2-path-traversal-via-symlink-in-file-api
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
epss: 0.00476
epssPercentile: 0.40298
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-14T19:19:17.004578Z'
ingestedAt: '2026-09-08T20:10:03.164Z'
---

## Overview

SiYuan versions before v3.8.2 contain a path traversal vulnerability in the reader-accessible file-read endpoint that follows symlinks when opening authorized asset paths. Attackers with reader role can request a logical asset under data/assets/ that is a symlink to a file outside the workspace and receive the target file bytes, bypassing workspace boundary restrictions.

## Remediation

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