CVE-2026-59939 PUBLISHED

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

Assigner: GitHub_M
Reserved: 07.07.2026 Published: 08.07.2026 Updated: 08.07.2026

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.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS Score: 7.5

Product Status

Vendor httplib2
Product httplib2
Versions
  • Version < 0.32.0 is affected

References

Problem Types

  • CWE-409: Improper Handling of Highly Compressed Data (Data Amplification) CWE