---
id: CVE-2026-93922
title: >-
  SiYuan through 3.8.4 renders notebook names as raw HTML in the Daily Note
  picker dialog without escaping, allowing stored cross-site scripting in the
  Electron renderer
summary: >-
  SiYuan through 3.8.4 renders notebook names as raw HTML in the Daily Note
  picker dialog without escaping, allowing stored cross-site scripting in the
  Electron renderer. Attackers can create notebooks with HTML payloads in names
  that exec…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-79
vendor: siyuan-note
product: github.com/siyuan-note/siyuan/kernel
affected:
  - github.com/siyuan-note/siyuan/kernel <= 3.8.4
published: '2026-09-19'
updated: '2026-09-22'
sourceUpdated: '2026-09-22T16:18:14.603'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93922'
references:
  - url: 'https://github.com/siyuan-note/siyuan'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/siyuan-note/siyuan/blob/v3.8.4/app/src/util/mount.ts#L72
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/siyuan-note/siyuan/blob/v3.8.4/kernel/model/file.go#L2446-L2454
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/siyuan-note/siyuan/security/advisories/GHSA-8c2m-33v9-vvqm
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/siyuan-through-3.8.4-stored-xss-via-notebook-names
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/siyuan-note/siyuan/security/advisories/GHSA-8c2m-33v9-vvqm
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-22T15:52:42.859543Z'
epss: 0.00816
epssPercentile: 0.5523
ingestedAt: '2026-09-18T23:54:36.627Z'
---

## Overview

SiYuan through 3.8.4 renders notebook names as raw HTML in the Daily Note picker dialog without escaping, allowing stored cross-site scripting in the Electron renderer. Attackers can create notebooks with HTML payloads in names that execute JavaScript with Node.js access when the picker opens, enabling operating system command execution.

## Remediation

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