Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-59939— httplib2: Decompression Bomb Denial of Service via Unbounded gzip/deflate Response Handling

Quick assessment

Affected
httplib2 httplib2
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

httplib2 httplib2是httplib2组织开源的一款处理HTTP请求的客户端库。 httplib2 0.32.0之前版本存在资源管理错误漏洞，该漏洞源于对HTTP响应体进行无限制解压缩，可能导致恶意服务器返回小压缩有效负载，在客户端内存中扩展，造成内存错误或OOM终止。

CVSS 7.5 · High EPSS 0.42% · P36

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 1

VendorProduct Version RangeStatus
httplib2 httplib2 < 0.32.0 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-59939

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
httplib2: Decompression Bomb Denial of Service via Unbounded gzip/deflate Response Handling
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对高度压缩数据的处理不恰当(数据放大攻击)
Source: CVE Program / CVE List V5
Vulnerability Title
httplib2 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
httplib2 httplib2是httplib2组织开源的一款处理HTTP请求的客户端库。 httplib2 0.32.0之前版本存在资源管理错误漏洞，该漏洞源于对HTTP响应体进行无限制解压缩，可能导致恶意服务器返回小压缩有效负载，在客户端内存中扩展，造成内存错误或OOM终止。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
httplib2 httplib2 < 0.32.0 -

II. Public POCs for CVE-2026-59939

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Qwen3.6-35B-A3B · 6942 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-59939

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-59939 (1)

Vendor Pages for CVE-2026-59939 (1)

IV. Related Vulnerabilities

Same product: httplib2
Same vendor: httplib2
Same weakness: CWE-409

V. Comments for CVE-2026-59939

No comments yet

Leave a comment