PYSEC-2026-1997 urllib3 does not control redirects in browsers and Node.js

urllib3 supports being used in a Pyodide runtime utilizing the JavaScript Fetch API or falling back on XMLHttpRequest. This means you can use Python libraries to make HTTP requests from your browser or Node.js. Additionally, urllib3 provides a mechanism to control redirects. However, the retries...

PYSEC-2026-1999 urllib3 redirects are not disabled when retries are disabled on PoolManager instantiation

urllib3 handles redirects and retries using the same mechanism, which is controlled by the Retry object. The most common way to disable redirects is at the request level, as follows: python resp = urllib3.request"GET", "https://httpbin.org/redirect/1", redirect=False printresp.status 302 However,...

Security Bulletin: Multiple Vulnerabilities in urllib3 bundled with IBM Fusion, IBM Fusion HCI, IBM Fusion Data Cataloging, and IBM Fusion Content-Aware Storage

Summary IBM Fusion, IBM Fusion HCI, IBM Fusion Data Cataloging, and IBM Fusion Content-Aware Storage include urllib3. It is susceptible to SSRF, high CPU usage and massive memory allocation vulnerabilities CVE-2025-50181, CVE-2025-66418, CVE-2025-66471,CVE-2026-21441 Vulnerability Details...

OESA-2026-2816 python-urllib3 security update

HTTP library with thread-safe connection pooling, file post support, sanity friendly, and more. Security Fixes: urllib3 version 2.6.3 is vulnerable to a decompression bomb bypass in its streaming API preloadcontent=False when using Brotli support. The issue arises due to three independent code...

OESA-2026-2815 python-urllib3 security update

HTTP library with thread-safe connection pooling, file post support, sanity friendly, and more. Security Fixes: urllib3 version 2.6.3 is vulnerable to a decompression bomb bypass in its streaming API preloadcontent=False when using Brotli support. The issue arises due to three independent code...

OESA-2026-2813 python-urllib3 security update

HTTP library with thread-safe connection pooling, file post support, sanity friendly, and more. Security Fixes: urllib3 version 2.6.3 is vulnerable to a decompression bomb bypass in its streaming API preloadcontent=False when using Brotli support. The issue arises due to three independent code...

The vulnerability of the HTTP response processing flow application interface of the Python library Urllib3 allows a attacker to cause a service failure.

The vulnerability of the HTTPConnection.urlopen method in the Python HTTP library, Urllib3, is related to incorrect processing of highly compressed input data. Exploiting this vulnerability can allow an attacker to gain unauthorized access to protected information...

The vulnerability of the HTTPConnection.urlopen() method in the HTTP library of the Urllib3 Python programming language, which allows attackers to gain unauthorized access to protected information.

The vulnerability of the HTTPConnection.urlopen method in the Python HTTP library, Urllib3, is related to insufficient protection of sensitive data. Exploiting this vulnerability can allow an attacker to gain unauthorized access to protected information...

MiracleLinux 8 : python3.12-urllib3-1.26.19-3.el8_10 (AXSA:2026-1103:03)

The remote MiracleLinux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the AXSA:2026-1103:03 advisory. urllib3: urllib3: Denial of Service due to excessive HTTP response decompression CVE-2026-44432 urllib3: urllib3: Information disclosure via...

urllib3: urllib3: Information disclosure via cross-origin redirects forwarding sensitive headers

A flaw was found in urllib3, an HTTP client library for Python. When using the low-level API via ProxyManager.connectionfromurl.urlopen with assertsamehost=False, cross-origin redirects can still forward sensitive headers. This could allow a remote attacker to gain unauthorized access to sensitiv...

urllib3: urllib3: Denial of Service due to excessive HTTP response decompression

A flaw was found in urllib3, an HTTP client library for Python. This vulnerability allows a remote attacker to cause excessive resource consumption, such as high CPU usage and massive memory allocation, on the client side. This occurs when urllib3 attempts to decompress an entire HTTP response,...

RLSA-2026:32992 Important: python3.12-urllib3 security update

Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems. Security Fixes:...

python3.12-urllib3 security update

An update is available for python3.12-urllib3. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list Python is an interpreted, interactive, object-oriented programming...

RockyLinux 8 : python3.12-urllib3 (RLSA-2026:32992)

The remote RockyLinux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RLSA-2026:32992 advisory. urllib3: urllib3: Denial of Service due to excessive HTTP response decompression CVE-2026-44432 urllib3: urllib3: Information disclosure via cross-origi...

Security Bulletin: Maximo AI Service uses multiple third party dependencies which are vulnerable to multiple CVEs.

Summary Maximo AI Service uses accelerate-1.6.0-py3-none-any.whl, protobuf-4.25.8-cp37-abi3-manylinux2014x8664.whl, pillow-10.3.0-cp311-cp311-manylinux228x8664.whl, langchain-0.3.23-py3-none-any.whl, nltk-3.9.1-py3-none-any.whl, langchaincore-0.3.81-py3-none-any.whl,...

Security Bulletin: IBM Maximo Application Suite uses urllib3-2.6.3-py3-none-any.whl which is vulnerable to CVE-2026-44431 and CVE-2026-44432.

Summary IBM Maximo Application Suite uses urllib3-2.6.3-py3-none-any.whl which is vulnerable to CVE-2026-44431 and CVE-2026-44432. This bulletin contains information regarding the vulnerability and its fixture. Vulnerability Details CVEID:CVE-2026-44431 DESCRIPTION: urllib3 is an HTTP client...

Important Photon OS Security Update - PHSA-2026-5.0-0911

Updates of 'python3-mistune', 'python3-urllib3', 'rubygem-nokogiri', 'rubygem-faraday' packages of Photon OS have been released...

Oracle Linux 8 : python3.12-urllib3 (ELSA-2026-32992)

The remote Oracle Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2026-32992 advisory. 1.26.19-3 - Security fixes for CVE-2026-44431 and CVE-2026-44432 Resolves: RHEL-185125, RHEL-184900 Tenable has extracted the preceding description...

Security Bulletin: IBM Maximo Application Suite - Visual Inspection component uses urllib3-2.6.3-py3-none-any.whl which is vulnerable to CVE-2026-44431, CVE-2026-44432

Summary IBM Maximo Application Suite - Visual Inspection component uses urllib3-2.6.3-py3-none-any.whl which is vulnerable to CVE-2026-44431, CVE-2026-44432, This bulletin contains information regarding the vulnerability and its remediation. Vulnerability Details CVEID:CVE-2026-44431 DESCRIPTION:...

urllib3: urllib3: Denial of Service due to excessive HTTP response decompression

A flaw was found in urllib3, an HTTP client library for Python. This vulnerability allows a remote attacker to cause excessive resource consumption, such as high CPU usage and massive memory allocation, on the client side. This occurs when urllib3 attempts to decompress an entire HTTP response,...