Issued:
2026-01-27
Updated:
2026-01-27

RHSA-2026:1337 - Important: python-s3transfer security update

Synopsis

Important: python-s3transfer security update

Type/Severity

Security Advisory Important

Topic

An update for python-s3transfer is now available for Red Hat Enterprise Linux 7 Extended Lifecycle Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

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: Unbounded decompression chain leads to resource exhaustion (CVE-2025-66418)

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.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

ProductVersionArch
Red Hat Enterprise Linux Resilient Storage for x86_64 - Extended Life Cycle Support7x86_64
Red Hat Enterprise Linux High Availability for x86_64 - Extended Life Cycle Support7x86_64

Updated Packages

  • python-s3transfer-0.1.13-1.el7_9.3.noarch.rpm
  • python-s3transfer-0.1.13-1.el7_9.3.src.rpm

Fixes

CVEs

References

Additional information