---
cve: "CVE-2026-70479"
severity: "HIGH"
cvss: 7.7
epss: "26%"
vendor: "open-webui"
kev: false
exploited: false
published: "2026-08-04 20:16:54"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-08T22:57:14+02:00"
---

# CVE-2026-70479

> 7.7 HIGH · 🧪 PoC

## Beschreibung

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 until 0.11.0, with WEB_LOADER_ENGINE=playwright, the Playwright web loader validates only the top-level page request and lets sub-resource requests pass unvalidated. A page supplied by an authenticated user can use JavaScript to reach blocked internal addresses, and returned DOM can include data read from those addresses in web-search or RAG output. This issue is fixed in 0.11.0.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |
| S Scope | Verändert | bad |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Keine | good |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- bef63a2ae915571d50d2722a635e8bfa753d7877 (Commit)
- f9590b8017199e56d5e953657e6498e3cef1d246 (Commit)

## Referenzen

- <https://github.com/open-webui/open-webui/security/advisories/GHSA-w2rx-84hp-gg95>
- <https://github.com/open-webui/open-webui/pull/27526>
- <https://github.com/open-webui/open-webui/commit/bef63a2ae915571d50d2722a635e8bfa753d7877>
- <https://github.com/open-webui/open-webui/releases/tag/v0.11.0>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-70479) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_