---
cve: "CVE-2023-43770"
severity: "MEDIUM"
cvss: 6.1
epss: "63.7%"
vendor: "n/a"
kev: true
exploited: true
published: "2023-09-22 06:15:10"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-24T11:21:26+02:00"
---

# CVE-2023-43770

> 6.1 MEDIUM · ⚠️ CISA KEV (955 Tage) · 🔓 Exploited · 🧪 PoC

## Beschreibung

Roundcube before 1.4.14, 1.5.x before 1.5.4, and 1.6.x before 1.6.3 allows XSS via text/plain e-mail messages with crafted links because of program/lib/Roundcube/rcube_string_replacer.php behavior.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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 | Erforderlich | good |
| S Scope | Verändert | bad |
| C Vertraulichkeit | Gering | warn |
| I Integrität | Gering | warn |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- 69be0b7b8133c51bd09c5ede4bbff26d68495394 (Commit)
- fe42e143cac01f0aabbbe5be7f1ee29236d3594b (Commit)

## Referenzen

- <https://github.com/roundcube/roundcubemail/commit/e92ec206a886461245e1672d8530cc93c618a49b>
- <https://roundcube.net/news/2023/09/15/security-update-1.6.3-released>
- <https://lists.debian.org/debian-lts-announce/2023/09/msg00024.html>
- <https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-43770>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2023-43770) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_