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[USN-8537-1] httplib2 vulnerability

Posted on 14 July 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8537-1
July 14, 2026

python-httplib2 vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 26.04 LTS
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS

Summary:

httplib2 could be made to crash if it received specially crafted network
traffic.

Software Description:
- python-httplib2: comprehensive HTTP client library written for Python3

Details:

It was discovered that httplib2 performed unbounded decompression of HTTP
response bodies when the server used gzip or deflate Content-Encoding. A
remote attacker could possibly use this issue to cause httplib2 to use
excessive resources, leading to a denial of service.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 26.04 LTS
python3-httplib2 0.22.0-1ubuntu0.1

Ubuntu 24.04 LTS
python3-httplib2 0.20.4-3ubuntu0.1

Ubuntu 22.04 LTS
python3-httplib2 0.20.2-2ubuntu0.1

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-8537-1
CVE-2026-59939

Package Information:
https://launchpad.net/ubuntu/+source/python-httplib2/0.22.0-1ubuntu0.1
https://launchpad.net/ubuntu/+source/python-httplib2/0.20.4-3ubuntu0.1
https://launchpad.net/ubuntu/+source/python-httplib2/0.20.2-2ubuntu0.1

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