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Advisory record · GHSA-j5g9-f88f-gfj3

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

CVSS 7.5 HighEPSS 0.0066 · 51st percentile

Published by the GitHub Advisory Database at 24 Jul 2026, 15:15 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
httplib2PyPI<0.32.00.32.0
Identifiers
GHSA-j5g9-f88f-gfj3 · CVE-2026-59939 · PYSEC-2026-3444
Weakness (CWE)
CWE-400 · CWE-409 · CWE-770
Tags
Published
24 Jul 2026
Updated
10 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

httplib2 versions before 0.32.0 decompress gzip and deflate HTTP response bodies without any size limit. A malicious or compromised server can send a small compressed response that expands to a very large size in memory, causing a MemoryError or an out-of-memory kill in the client process. No authentication or user interaction is needed. Upgrade to httplib2 0.32.0 or later.

Written 5 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.5 High 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0066, the 51st percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:35 UTC First seen by agentprime
  2. 31 Oct 2026, 14:35 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.