urllib3-1.26.19-py2.py3-none-any.whl: 3 vulnerabilities (highest severity is: 7.5) #46
Description
Vulnerable Library - urllib3-1.26.19-py2.py3-none-any.whl
HTTP library with thread-safe connection pooling, file post, and more.
Library home page: https://files.pythonhosted.org/packages/ae/6a/99eaaeae8becaa17a29aeb334a18e5d582d873b6f084c11f02581b8d7f7f/urllib3-1.26.19-py2.py3-none-any.whl
Path to dependency file: /blockchain/requirements.txt
Path to vulnerable library: /blockchain/requirements.txt
Found in HEAD commit: 56243b6f6a9d69dc996086fd1497f2255877936c
Vulnerabilities
| Vulnerability | Severity |  CVSS |
Dependency | Type | Fixed in (urllib3 version) | Remediation Possible** |
|---|---|---|---|---|---|---|
| CVE-2025-66471 |  High |
7.5 | urllib3-1.26.19-py2.py3-none-any.whl | Direct | urllib3 - 2.6.0,https://github.com/urllib3/urllib3.git - 2.6.0 | ❌ |
| CVE-2025-66418 | High |
7.5 | urllib3-1.26.19-py2.py3-none-any.whl | Direct | https://github.com/urllib3/urllib3.git - 2.6.0,urllib3 - 2.6.0 | ❌ |
| CVE-2025-50181 |  Medium |
5.3 | urllib3-1.26.19-py2.py3-none-any.whl | Direct | 2.5.0 | ❌ |
**In some cases, Remediation PR cannot be created automatically for a vulnerability despite the availability of remediation
Details
CVE-2025-66471
Vulnerable Library - urllib3-1.26.19-py2.py3-none-any.whl
HTTP library with thread-safe connection pooling, file post, and more.
Library home page: https://files.pythonhosted.org/packages/ae/6a/99eaaeae8becaa17a29aeb334a18e5d582d873b6f084c11f02581b8d7f7f/urllib3-1.26.19-py2.py3-none-any.whl
Path to dependency file: /blockchain/requirements.txt
Path to vulnerable library: /blockchain/requirements.txt
Dependency Hierarchy:
- ❌ urllib3-1.26.19-py2.py3-none-any.whl (Vulnerable Library)
Found in HEAD commit: 56243b6f6a9d69dc996086fd1497f2255877936c
Found in base branch: main
Vulnerability Details
urllib3 is a user-friendly HTTP client library for Python. Starting in version 1.0 and prior to 2.6.0, the Streaming API improperly handles highly compressed data. urllib3's streaming API is designed for the efficient handling of large HTTP responses by reading the content in chunks, rather than loading the entire response body into memory at once. When streaming a compressed response, urllib3 can perform decoding or decompression based on the HTTP Content-Encoding header (e.g., gzip, deflate, br, or zstd). The library must read compressed data from the network and decompress it until the requested chunk size is met. Any resulting decompressed data that exceeds the requested amount is held in an internal buffer for the next read operation. The decompression logic could cause urllib3 to fully decode a small amount of highly compressed data in a single operation. This can result in excessive resource consumption (high CPU usage and massive memory allocation for the decompressed data.
Publish Date: 2025-12-05
URL: CVE-2025-66471
CVSS 3 Score Details (7.5)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: High
Suggested Fix
Type: Upgrade version
Origin: GHSA-2xpw-w6gg-jr37
Release Date: 2025-12-05
Fix Resolution: urllib3 - 2.6.0,https://github.com/urllib3/urllib3.git - 2.6.0
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CVE-2025-66418
Vulnerable Library - urllib3-1.26.19-py2.py3-none-any.whl
HTTP library with thread-safe connection pooling, file post, and more.
Library home page: https://files.pythonhosted.org/packages/ae/6a/99eaaeae8becaa17a29aeb334a18e5d582d873b6f084c11f02581b8d7f7f/urllib3-1.26.19-py2.py3-none-any.whl
Path to dependency file: /blockchain/requirements.txt
Path to vulnerable library: /blockchain/requirements.txt
Dependency Hierarchy:
- ❌ urllib3-1.26.19-py2.py3-none-any.whl (Vulnerable Library)
Found in HEAD commit: 56243b6f6a9d69dc996086fd1497f2255877936c
Found in base branch: main
Vulnerability Details
urllib3 is a user-friendly HTTP client library for Python. Starting in version 1.24 and prior to 2.6.0, the number of links in the decompression chain was unbounded allowing a malicious server to insert a virtually unlimited number of compression steps leading to high CPU usage and massive memory allocation for the decompressed data. This vulnerability is fixed in 2.6.0.
Publish Date: 2025-12-05
URL: CVE-2025-66418
CVSS 3 Score Details (7.5)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: High
Suggested Fix
Type: Upgrade version
Release Date: 2025-12-05
Fix Resolution: https://github.com/urllib3/urllib3.git - 2.6.0,urllib3 - 2.6.0
Step up your Open Source Security Game with Mend here
CVE-2025-50181
Vulnerable Library - urllib3-1.26.19-py2.py3-none-any.whl
HTTP library with thread-safe connection pooling, file post, and more.
Library home page: https://files.pythonhosted.org/packages/ae/6a/99eaaeae8becaa17a29aeb334a18e5d582d873b6f084c11f02581b8d7f7f/urllib3-1.26.19-py2.py3-none-any.whl
Path to dependency file: /blockchain/requirements.txt
Path to vulnerable library: /blockchain/requirements.txt
Dependency Hierarchy:
- ❌ urllib3-1.26.19-py2.py3-none-any.whl (Vulnerable Library)
Found in HEAD commit: 56243b6f6a9d69dc996086fd1497f2255877936c
Found in base branch: main
Vulnerability Details
urllib3 is a user-friendly HTTP client library for Python. Prior to 2.5.0, it is possible to disable redirects for all requests by instantiating a PoolManager and specifying retries in a way that disable redirects. By default, requests and botocore users are not affected. An application attempting to mitigate SSRF or open redirect vulnerabilities by disabling redirects at the PoolManager level will remain vulnerable. This issue has been patched in version 2.5.0.
Publish Date: 2025-06-19
URL: CVE-2025-50181
CVSS 3 Score Details (5.3)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: High
- Privileges Required: Low
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: High
- Integrity Impact: None
- Availability Impact: None
Suggested Fix
Type: Upgrade version
Release Date: 2025-06-19
Fix Resolution: 2.5.0
Step up your Open Source Security Game with Mend here