Ubuntu Security Notices USN-8537-1 USN-8537-1: httplib2 vulnerability Publication date 14 July 2026 Overview httplib2 could be made to crash if it received specially crafted network traffic. Releases 26.04 LTS 24.04 LTS 22.04 LTS Open side navigation Close side navigation Packages Details Update instructions References Packages 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. 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 In general, a standard system update will make all the necessary changes. Learn more about how to get the fixes. The problem can be corrected by updating your system to the following package versions: Ubuntu Release Package Version 26.04 LTS resolute python3-httplib2 – 0.22.0-1ubuntu0.1 24.04 LTS noble python3-httplib2 – 0.20.4-3ubuntu0.1 22.04 LTS jammy python3-httplib2 – 0.20.2-2ubuntu0.1 Reduce your security exposure Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines. Get Ubuntu Pro References CVE-2026-59939 CVE-2026-59939