CVE-2026-59939

HIGH

httplib2: Decompression Bomb Denial of Service via Unbounded gzip/deflate Response Handling

Title source: cna
STIX 2.1

Description

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.

References (3)

Core 3

Scores

CVSS v3 7.5
EPSS 0.0041
EPSS Percentile 33.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-409
Status published
Products (3)
httplib2/httplib2 < 0.32.0
httplib2_project/httplib2 < 0.32.0
pypi/httplib2 0 - 0.32.0PyPI
Published Jul 08, 2026
Tracked Since Jul 09, 2026