Vulnerability in httplib2 (CVE-2026-59939)
Summary
Vulnerability in httplib2 (CVE-2026-59939). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to 0.32.0 or later.
Original description
The description as published by the source.
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.
Source: NIST National Vulnerability Database NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-59939 has been found in httplib2.
Risk of unauthorized operations or information disclosure. CVSS score: 7.5/10.
What to do: upgrade httplib2 to 0.32.0 or later.
If unsure, ask your IT team or search "httplib2 CVE-2026-59939" on the vendor's site.
CVE-2026-59939 (httplib2) — CWE-409 / CVSS v3 7.5
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Patched: 0.32.0 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-409) exists in httplib2.
Check the vendor advisory for the affected versions of httplib2.
Severity: High (CVSS 7.5/10). Risk of unauthorized operations or information disclosure.
Update to 0.32.0.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'httplib2' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r 'httplib2' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
httplib2を grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade httplib2 to 0.32.0ステージング環境で 0.32.0 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2026-59939 python-httplib2 Fixed in: 0.20.4-3+deb12u1
- Ubuntu UBUNTU-CVE-2026-59939 python-httplib2
References
- advisory github.com
- patch github.com
- report github.com
- web nvd.nist.gov
- web github.com
- web github.com
- web lists.debian.org