high7.5
CVE-2026-59939
httplib2: Decompression Bomb Denial of Service via Unbounded gzip/deflate Response Handling
Impact
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 packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | httplib2 | < 0.32.0 | 0.32.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Httplib2 Project | Httplib2 | before 0.32.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-j5g9-f88f-gfj3
- https://github.com/httplib2/httplib2/security/advisories/GHSA-j5g9-f88f-gfj3
- https://nvd.nist.gov/vuln/detail/CVE-2026-59939
- https://github.com/httplib2/httplib2/commit/87581ad6cf752fe3da2090c59058261d2d00a427
- https://github.com/httplib2/httplib2/releases/tag/v0.32.0
- https://github.com/pypa/advisory-database/tree/main/vulns/httplib2/PYSEC-2026-3444.yaml
- https://lists.debian.org/debian-lts-announce/2026/08/msg00039.html