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High RLSA-2026:3359 1 CVE

Important: python-pyasn1 security update

Published Feb 28, 2026 · Updated Feb 28, 2026

Ecosystem: Rocky Linux

Summary

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 due to memory exhaustion from malformed RELATIVE-OID (CVE-2026-23490)

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.

Fixed packages 1

ReleasePackageFixed in
Rocky Linux · 9 python-pyasn1 0:0.4.8-7.el9_7

Vulnerabilities 1

  • High 7.5
    CVE-2026-23490

    pyasn1 has a DoS vulnerability in decoder

    pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.2, a Denial-of-Service issue has been found that leads to memory exhaustion from malformed RELATIVE-OID with excessive continuation octets. This vulnerability is fixed in 0.6.2.

    pyasn1 pyasn1 open-webui katib-earlystopping Debian Ubuntu Wolfi PyPI

References

  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2430472