RHSA-2026:60362: Important: python-urllib3 security update
Important: python-urllib3 security update
Other sources
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 Fix(es): urllib3: urllib3: Denial of Service due to excessive HTTP response decompression (CVE-2026-44432) urllib3: urllib3: Information disclosure via cross-origin redirects forwarding sensitive headers (CVE-2026-44431) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
— Red Hat
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
redhat/python-urllib3to a version that resolves this vulnerability.Fixed in 1.26.5-3.el9_2.4 - Upgrade
Upgrade
redhat/python3-urllib3to a version that resolves this vulnerability.Fixed in 1.26.5-3.el9_2.4
Event History
Frequently Asked Questions
What application behaviors make these issues relevant?
Applications using urllib3 to decompress HTTP responses may be exposed to denial of service from excessive response decompression. Applications that follow cross-origin redirects while forwarding sensitive headers may be exposed to information disclosure.
Which environments are covered by this advisory?
The advisory lists Red Hat Enterprise Linux Server AUS, Power little-endian Update Services for SAP Solutions and Extended Life Cycle, ARM 64 4-year updates and Extended Life Cycle, x86_64 Update Services for SAP Solutions and Extended Life Cycle, and IBM z Systems 4-year updates.