---
id: CVE-2026-85578
title: >-
  SiYuan through 3.8.1 contains an authorization bypass vulnerability in the
  /api/file/getFile endpoint that allows readers to retrieve files from
  notebooks explicitly configured as Visible:false
summary: >-
  SiYuan through 3.8.1 contains an authorization bypass vulnerability in the
  /api/file/getFile endpoint that allows readers to retrieve files from
  notebooks explicitly configured as Visible:false. Attackers with reader role
  can access priv…
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-862
vendor: siyuan-note
product: siyuan
affected:
  - siyuan <= 3.8.1
published: '2026-09-04'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T14:17:14.770'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-85578'
references:
  - url: >-
      https://github.com/siyuan-note/siyuan/security/advisories/GHSA-8ggq-wq3f-vxrw
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/siyuan-through-3.8.1-authorization-bypass-via-getfile
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-14T13:24:18.499565Z'
epss: 0.00273
epssPercentile: 0.19931
ingestedAt: '2026-09-08T20:10:03.164Z'
---

## Overview

SiYuan through 3.8.1 contains an authorization bypass vulnerability in the /api/file/getFile endpoint that allows readers to retrieve files from notebooks explicitly configured as Visible:false. Attackers with reader role can access private workspace files including notebook metadata and internal configuration by knowing the hidden notebook identifier and file path.

## Remediation

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