RHSA-2026:54290: Moderate: python-idna security update
Moderate: python-idna 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): python-idna: idna: Denial of Service via specially crafted long inputs (CVE-2026-45409) 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-idnato a version that resolves this vulnerability.Fixed in 2.5-8.el8_10 - Upgrade
Upgrade
redhat/python3-idnato a version that resolves this vulnerability.Fixed in 2.5-8.el8_10 - Upgrade
Upgrade
python-idnato a version that resolves this vulnerability.Patch CVE-2026-45409
Event History
Frequently Asked Questions
What is the severity of RHSA-2026:54290?
The severity of RHSA-2026:54290 is categorized as medium.
How do I fix RHSA-2026:54290?
To fix RHSA-2026:54290, apply the security update for python-idna through your package manager.
What systems are affected by RHSA-2026:54290?
RHSA-2026:54290 affects various versions of Red Hat Enterprise Linux for IBM z Systems, ARM 64, Power, and x86_64.
What is the publication date of RHSA-2026:54290?
RHSA-2026:54290 was published on August 12, 2026.
What type of vulnerability is addressed in RHSA-2026:54290?
RHSA-2026:54290 addresses a security update related to the python-idna package.