CVE-2026-44432 - High Severity Vulnerability
Vulnerable Library - urllib3-2.6.3-py3-none-any.whl
HTTP library with thread-safe connection pooling, file post, and more.
Library home page: https://files.pythonhosted.org/packages/39/08/aaaad47bc4e9dc8c725e68f9d04865dbcb2052843ff09c97b08904852d84/urllib3-2.6.3-py3-none-any.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /tmp/ws-ua_20260402140528_BYRDYW/python_TYRXAX/20260402140530/urllib3-2.6.3-py3-none-any.whl,/tmp/ws-ua_20260402140528_BYRDYW/python_TYRXAX/20260402140530/urllib3-2.6.3-py3-none-any.whl
Dependency Hierarchy:
- ❌ urllib3-2.6.3-py3-none-any.whl (Vulnerable Library)
Found in HEAD commit: 733821ba208032bbe0d8b2992a2e4aece4265119
Found in base branch: main
Vulnerability Details
urllib3 is an HTTP client library for Python. From 2.6.0 to before 2.7.0, urllib3 could decompress the whole response instead of the requested portion (1) during the second HTTPResponse.read(amt=N) call when the response was decompressed using the official Brotli library or (2) when HTTPResponse.drain_conn() was called after the response had been read and decompressed partially (compression algorithm did not matter here). These issues could cause urllib3 to fully decode a small amount of highly compressed data in a single operation. This could result in excessive resource consumption (high CPU usage and massive memory allocation for the decompressed data) on the client side. This vulnerability is fixed in 2.7.0.
Publish Date: 2026-05-13
URL: CVE-2026-44432
CVSS 3 Score Details (8.6)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Changed
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: High
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Origin: GHSA-mf9v-mfxr-j63j
Release Date: 2026-05-11
Fix Resolution: 2.7.0
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CVE-2026-44432 - High Severity Vulnerability
HTTP library with thread-safe connection pooling, file post, and more.
Library home page: https://files.pythonhosted.org/packages/39/08/aaaad47bc4e9dc8c725e68f9d04865dbcb2052843ff09c97b08904852d84/urllib3-2.6.3-py3-none-any.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /tmp/ws-ua_20260402140528_BYRDYW/python_TYRXAX/20260402140530/urllib3-2.6.3-py3-none-any.whl,/tmp/ws-ua_20260402140528_BYRDYW/python_TYRXAX/20260402140530/urllib3-2.6.3-py3-none-any.whl
Dependency Hierarchy:
Found in HEAD commit: 733821ba208032bbe0d8b2992a2e4aece4265119
Found in base branch: main
urllib3 is an HTTP client library for Python. From 2.6.0 to before 2.7.0, urllib3 could decompress the whole response instead of the requested portion (1) during the second HTTPResponse.read(amt=N) call when the response was decompressed using the official Brotli library or (2) when HTTPResponse.drain_conn() was called after the response had been read and decompressed partially (compression algorithm did not matter here). These issues could cause urllib3 to fully decode a small amount of highly compressed data in a single operation. This could result in excessive resource consumption (high CPU usage and massive memory allocation for the decompressed data) on the client side. This vulnerability is fixed in 2.7.0.
Publish Date: 2026-05-13
URL: CVE-2026-44432
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Changed
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: High
For more information on CVSS3 Scores, click here.Type: Upgrade version
Origin: GHSA-mf9v-mfxr-j63j
Release Date: 2026-05-11
Fix Resolution: 2.7.0
Step up your Open Source Security Game with Mend here