RHSA-2026:98096: 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 via unbounded memory allocation in chunk parser (CVE-2026-97689) urllib3: urllib3: Traffic interception via HTTPS proxy TLS configuration override (CVE-2026-97687) 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 1.26.19-2.el10_0.2 - Upgrade
Upgrade
redhat/python3-urllib3to a version that resolves this vulnerability.Fixed in 1.26.19-2.el10_0.2
Event History
Frequently Asked Questions
Which systems are covered by this advisory?
The advisory applies to Red Hat Enterprise Linux offerings for x86_64, ARM 64, IBM z Systems, and Power little endian that are listed with either Extended Update Support or four years of updates/support.
What security impacts are addressed by this update?
The update addresses a denial-of-service issue caused by unbounded memory allocation in urllib3's chunk parser and a traffic-interception issue involving HTTPS proxy TLS configuration override.
Is there enough information here to determine affected package versions or available mitigations?
No. The provided advisory data does not identify affected or fixed python-urllib3 package versions, configuration prerequisites, detection methods, or mitigations for systems that cannot yet be patched.