---
cve: "CVE-2026-62643"
severity: "HIGH"
cvss: 7.2
epss: "25%"
vendor: "Roundcube"
kev: false
exploited: false
published: "2026-07-14 16:17:04"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-03T07:07:28+02:00"
---

# CVE-2026-62643

> 7.2 HIGH · 🧪 PoC

## Beschreibung

In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, insufficient Cascading Style Sheets (CSS) sanitization in HTML e-mail messages may lead to SSRF or Information Disclosure, e.g., if stylesheet links point to local network hosts. NOTE: this issue exists because of insufficient fixes for CVE-2026-35540 and CVE-2026-48843.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 5cdc6a48b40beabff7f0bf5d9035f4491e877e4c (Commit)
- a08bc8f59bbd28cd3d863479478127e35beb959d (Commit)

## Referenzen

- <https://roundcube.net/news/2026/07/05/security-updates-1.6.17-and-1.7.2>
- <https://github.com/roundcube/roundcubemail/releases/tag/1.7.2>
- <https://github.com/roundcube/roundcubemail/commit/6d69e094d55d3a9a84dfb36edf6ca985311f0c1c>
- <https://github.com/roundcube/roundcubemail/releases/tag/1.6.17>
- <https://github.com/roundcube/roundcubemail/commit/294c7da6e7284166f040cef8607b677d459e0786>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-62643) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_