---
cve: "CVE-2026-65605"
severity: "CRITICAL"
cvss: 9.4
epss: "0.6%"
vendor: "siyuan-note"
kev: false
exploited: false
published: "2026-07-23 12:18:47"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-20T16:09:36+02:00"
---

# CVE-2026-65605

> 9.4 CRITICAL · 🧪 PoC

## Beschreibung

SiYuan before v3.7.2 contains a stored cross-site scripting vulnerability in Attribute View (database) cell rendering. A Template column value is rendered as HTML via text/template without auto-escaping, and EscapeHTML is only applied when HasUnclosedHtmlTag returns true; because balanced self-closing tags such as  are skipped by that check, a payload like  is stored unescaped and later inserted into the page via innerHTML, executing when the database is viewed. Because the desktop renderer runs with nodeIntegration enabled, the injected script can reach require and escalate to arbitrary command execution.

## CVSS-Vektor

```
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
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |

## Patch verfügbar (OSV)

- 726dae1d518927f70ea609bc146288b9aa95e366 (Commit)

## Referenzen

- <https://github.com/siyuan-note/siyuan/security/advisories/GHSA-pw5c-qhf3-jhwh>
- <https://github.com/siyuan-note/siyuan/commit/41f2861c87575ff5ac4b50a0520b1a4fe55b4a70>
- <https://www.vulncheck.com/advisories/siyuan-before-stored-xss-to-rce-via-attribute-view>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-65605) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_