Fedora 43 Python-Cryptography Addresses Major DNS SAN Security Flaw
fedora
March 30, 2026
Update to v46.0.6 This includes a single fix for security issue: * **SECURITY ISSUE**: Fixed a bug where name constraints were not applied to peer names during verification when t...
Summary
cryptography is a package designed to expose cryptographic primitives and
recipes to Python developers.
Update Information:
Update to v46.0.6 This includes a single fix for security issue: * **SECURITY ISSUE**: Fixed a bug where name constraints were not applied to peer names during verification when the leaf certificate contains a wildcard DNS SAN. Ordinary X.509 topologies are not affected by this bug, including those used by the Web PKI. Credit to **Oleh Konko (1seal)** for reporting the issue. **CVE-2026-34073**
Change Log
* Thu Mar 26 2026 Jeremy Cline
References
[ 1 ] Bug #2451584 - python-cryptography-46.0.6 is available
https://bugzilla.redhat.com/show_bug.cgi?id=2451584
Update Instructions
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-6c010af7be' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label
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Name: python-cryptography
Product: Fedora 43
Version: 46.0.6
Release: 1.fc43
Summary: PyCA's cryptography library
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