---
cve: "CVE-2019-12855"
severity: "LOW"
cvss: 3.1
epss: "1.8%"
vendor: "n/a"
kev: false
exploited: false
published: "2019-06-16 12:29:00"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-10T08:29:20+02:00"
---

# CVE-2019-12855

> 3.1 LOW · 🧪 PoC

## Beschreibung

In words.protocols.jabber.xmlstream in Twisted through 19.2.1, XMPP support did not verify certificates when used with TLS, allowing an attacker to MITM connections.

## Referenzen

- <https://twistedmatrix.com/trac/ticket/9561>
- <https://github.com/twisted/twisted/pull/1147>
- <https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PLTZDMFBNFSJMBXYJNGJHENJA4H2TSMZ/>
- <http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00013.html>
- <http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00028.html>
- <https://usn.ubuntu.com/4308-2/>
- <https://usn.ubuntu.com/4308-1/>
- <https://www.oracle.com/security-alerts/cpuapr2020.html>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2019-12855) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_