RHSA-2026:59241: Important: python-pyasn1 security update
Important: python-pyasn1 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): pyasn1: pyasn1: Denial of Service via crafted ASN.1 REAL values (CVE-2026-59886) 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-pyasn1to a version that resolves this vulnerability.Fixed in 0.3.7-6.el8_10.2 - Upgrade
Upgrade
redhat/python3-pyasn1to a version that resolves this vulnerability.Fixed in 0.3.7-6.el8_10.2 - Upgrade
Upgrade
redhat/python3-pyasn1-modulesto a version that resolves this vulnerability.Fixed in 0.3.7-6.el8_10.2
Event History
Frequently Asked Questions
Which systems are covered by this update?
The update applies to Red Hat Enterprise Linux on x86_64, ARM 64, Power little endian, and IBM z Systems, including the corresponding Extended Life Cycle offerings.
What component should administrators review when triaging exposure?
Administrators should identify installations of the python-pyasn1 package on the affected Red Hat Enterprise Linux systems. The provided information does not identify vulnerable package versions, exploit prerequisites, or workaround measures.