CVE-2026-59939
httplib2: Decompression Bomb Denial of Service via Unbounded gzip/deflate Response Handling
CVSS Score
7.5
EPSS Score
0.3%
EPSS Percentile
26th
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 | CWE-409 |
| Vendor | httplib2 |
| Product | httplib2 |
| Published | Jul 8, 2026 |
| Last Updated | Jul 10, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
httplib2 / httplib2
< 0.32.0