High [CVE-2026-59939] Denial of Service via unbounded decompression of HTTP response bodies

httplib2 is a comprehensive HTTP client library for Python.

Prior to 0.32.0, httplib2 performs unbounded decompression of HTTP response bodies encoded with Content-Encoding: gzip or deflate in _decompressContent in httplib2/init.py, allowing a malicious or compromised HTTP server to return a small compressed payload that expands to an arbitrarily large size in memory and causes MemoryError or OOM-kill in the client process.

This issue is fixed in version 0.32.0. This unbounded decompression can lead to a Denial of Service (DoS) by causing the client application to run out of memory and crash.

This Important vulnerability in `httplib2` allows a remote attacker to trigger a Denial of Service (DoS) in client applications. By sending a specially crafted, compressed HTTP response, a malicious server can cause the client to exhaust its memory due to unbounded decompression, leading to application crashes.

This poses a significant risk to Red Hat products that use `httplib2` to process untrusted HTTP content. Red Hat severity: Important — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

Weakness: CWE-409.