---
cve: "CVE-2026-91922"
severity: "MEDIUM"
cvss: 5.3
epss: "0.3%"
vendor: "steedos"
kev: false
exploited: false
published: "2026-09-15 11:17:12"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-20T00:34:14+02:00"
---

# CVE-2026-91922

> 5.3 MEDIUM · 🧪 PoC

## Beschreibung

Steedos Platform through 3.0.15-beta.47 contains a reflected cross-site scripting vulnerability in the anonymous /api/page/render endpoint that fails to properly escape query parameters in inline script elements. Attackers can craft malicious links with script-terminating sequences in the schemaApi or data parameters to execute arbitrary JavaScript in victim sessions and steal X-Auth-Token credentials.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
```

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

## Patch verfügbar (OSV)

- 044423a3f326d86cf17f0e45adcbd44d2d3b06dd (Commit)

## Referenzen

- <https://github.com/steedos/steedos-platform/issues/8354>
- <https://github.com/steedos/steedos-platform>
- <https://github.com/steedos/steedos-platform/blob/044423a3f326d86cf17f0e45adcbd44d2d3b06dd/services/service-pages/main/default/routes/page_render.router.js>
- <https://github.com/steedos/steedos-platform/blob/044423a3f326d86cf17f0e45adcbd44d2d3b06dd/services/service-pages/main/default/routes/page_view.ejs>
- <https://www.vulncheck.com/advisories/steedos-platform-through-3.0.15-beta.47-reflected-xss-via-page-render>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-91922) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_