Bug 2453611

Summary: CVE-2026-34073 pypy3.11: Cryptography: Security bypass due to improper DNS name constraint validation [fedora-all]
Product: [Fedora] Fedora Reporter: Jon Moroney <jmoroney>
Component: pypy3.11Assignee: Python Maintainers <python-maint>
Status: CLOSED NOTABUG QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: rawhideCC: cstratak, mhroncok, python-maint, python-packagers-sig
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["56822688-9659-4214-8305-5a5856b76c34"]}
Fixed In Version: Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-04-11 22:33:14 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2453276    

Description Jon Moroney 2026-03-31 22:39:00 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Comment 1 Charalampos Stratakis 2026-04-11 22:33:14 UTC 
The cryptography directory is just a version stub, there is no python level code handling name constraints.