CVE & CISA-KEV Catalog

CVE-2026-59939

HIGH
7.5
CVSS v3
NVD

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.

CWE-409

How to fix

Remediation Available
python-httplib2Debian
Fixed in:0.32.0-1CVE-2026-59939
python-httplib2Ubuntu
Fixed in:0.20.2-2ubuntu0.1USN-8537-1
Fixed in:0.20.4-3ubuntu0.1USN-8537-1
python3-httplib2Ubuntu
Fixed in:0.20.2-2ubuntu0.1USN-8537-1
Fixed in:0.20.4-3ubuntu0.1USN-8537-1

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Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityHigh

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

Exploit Intelligence

0.36%probability of exploitation in 30 days
28thpercentile

Low risk: more likely to be exploited than 28% of all known CVEs.

References

Exploit1
Release Notes1

Related Vulnerabilities

Other CWE-409 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2026-49975High7.511%-Fix
CVE-2026-21441High7.52.7%-Fix
CVE-2024-43499High7.52.6%-Fix
CVE-2024-28180Medium4.32.0%-Fix
CVE-2017-16129Medium5.91.8%-Fix
CVE-2022-29225High7.51.4%-Fix
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-07-13.