CVE-2026-59939
Medium
Elevated severity or exploit probability.
CVSS base
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS — probability of exploitation (30 days)
0.7%
49.7th percentile
CISA KEV
Not listed
Weakness / dates
CWE-409
Published 2026-07-08 · modified 2026-08-20
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.
Affected
References
- https://github.com/httplib2/httplib2/commit/87581ad6cf752fe3da2090c59058261d2d00a427
- https://github.com/httplib2/httplib2/releases/tag/v0.32.0
- exploit https://github.com/httplib2/httplib2/security/advisories/GHSA-j5g9-f88f-gfj3
- https://lists.debian.org/debian-lts-announce/2026/08/msg00039.html
- exploit https://github.com/httplib2/httplib2/security/advisories/GHSA-j5g9-f88f-gfj3