Description
Slixmpp before 1.8.3 lacks SSL Certificate hostname validation in XMLStream, allowing an attacker to pose as any server in the eyes of Slixmpp.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | slixmpp | 1.8.3-1 | — |
| Debian 13 | slixmpp | 1.8.3-1 | — |
| Debian 12 | slixmpp | 1.8.3-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | slixmpp | No fix yet | — |
| Ubuntu 20.04 LTS | slixmpp | No fix yet | — |
| Ubuntu 18.04 LTS | slixmpp | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Package Hub 15 SP4 | python-slixmpp | 1.4.2-bp154.2.3.1 | openSUSE-SU-2022:10242-1 |
| SUSE Package Hub 15 SP3 | python-slixmpp | 1.4.2-bp153.2.3.1 | openSUSE-SU-2022:10241-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | python-slixmpp | 1.8.6-1.1 | openSUSE-SU-2025:14628-1 |
| openSUSE Leap 15.4 | python-slixmpp | 1.4.2-bp154.2.3.1 | openSUSE-SU-2022:10242-1 |
| openSUSE Leap 15.3 | python-slixmpp | 1.4.2-bp153.2.3.1 | openSUSE-SU-2022:10241-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | slixmpp | < 1.8.3 | 1.8.3 | GHSA-q6cq-m9gm-6q2f |
Advisories 3
- openSUSE-SU-2025:14628-1 python311-slixmpp-1.8.6-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2022:10242-1 Security update for python-slixmpp SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2022:10241-1 Security update for python-slixmpp SUSE / openSUSE Security Updates · Feb 4, 2026