---
cve: "CVE-2026-73050"
severity: "CRITICAL"
cvss: 9.4
epss: "25%"
vendor: "siyuan-note"
kev: false
exploited: false
published: "2026-08-15 22:16:54"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-06T14:39:18+02:00"
---

# CVE-2026-73050

> 9.4 CRITICAL · 🧪 PoC

## Beschreibung

SiYuan versions before v3.7.4 fail to validate or escape the color field in attribute-view select options, allowing stored cross-site scripting through eight unescaped render sites. Attackers can inject event-handler attributes by including quotation marks in the color value, executing arbitrary JavaScript when viewing databases containing the malicious select field.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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 | Gering | warn |

## Referenzen

- <https://github.com/siyuan-note/siyuan/security/advisories/GHSA-m7cc-jh9q-wxg8>
- <https://www.vulncheck.com/advisories/siyuan-before-stored-xss-via-select-option-color>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-73050) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_