---
title: "CVE-2026-44670: SiYuan Affected by Stored XSS via Attribute View Name to Electron Renderer RCE"
url: https://erroneo.us/security/cve/CVE-2026-44670/
description: "CVE-2026-44670 (github.com/siyuan-note/siyuan/kernel (Go)): SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, the kernel stores…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-05-14
date_modified: 2026-05-15
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-44670"
kev: false
cvss: 9.4
epss: 0.00551
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-44670: SiYuan Affected by Stored XSS via Attribute View Name to Electron Renderer RCE

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Not in CISA KEV , but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 0.6% , percentile 45: FIRST’s model estimates a 0.6% chance of exploitation activity in the next 30 days, higher than 45% of all scored CVEs (low). EPSS is a probability, not a verdict.
- Only applies if your dependency tree includes github.com/siyuan-note/siyuan/kernel (Go) <= 0.0.0-20260421031503-96dfe0bea474, fixed in 0.0.0-20260512140701-d7b77d945e0d . Check your lockfile, including transitive dependencies.

## What it is

SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, the kernel stores Attribute View (AV / database) names without any HTML escape, then a render template uses raw strings.ReplaceAll(tpl, "${avName}", nodeAvName) to embed the name in HTML before pushing to all clients via WebSocket. Three independent client paths (render.ts:120 → outerHTML, Title.ts:401 → innerHTML, transaction.ts:559 → innerHTML) consume the value without escaping. Because the main BrowserWindow runs nodeIntegration:true, contextIsolation:false, webSecurity:false (app/electron/main.js:407-411), HTML injection in the renderer becomes Node.js code execution. This vulnerability is fixed in 3.7.0.

## Affected packages

- Go `github.com/siyuan-note/siyuan/kernel` <= 0.0.0-20260421031503-96dfe0bea474 → fixed: 0.0.0-20260512140701-d7b77d945e0d

## Affected products (CVE record)

- siyuan-note siyuan: < 3.7.0

## Severity

- GitHub_M CVSS 4.0: 9.4 `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H`
- GitHub CVSS 4.0: 9.4 `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc , automatable no , technical impact total .
- FIRST EPSS (model of 2026-10-21): 0.55% probability of exploitation activity in the next 30 days; percentile 45.

## Sources

- [GitHub Advisory GHSA-2h64-c999-c9r6](https://github.com/advisories/GHSA-2h64-c999-c9r6)
- [CVE.org record CVE-2026-44670](https://www.cve.org/CVERecord?id=CVE-2026-44670)
- [NVD entry CVE-2026-44670](https://nvd.nist.gov/vuln/detail/CVE-2026-44670)
- [github.com](https://github.com/siyuan-note/siyuan/security/advisories/GHSA-2h64-c999-c9r6)

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Source page: https://erroneo.us/security/cve/CVE-2026-44670/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt