Bug 2454194

Summary: CVE-2026-34873 micropython: Mbed TLS: Client impersonation during TLS 1.3 session resumption [fedora-all]
Product: [Fedora] Fedora Reporter: Sandipan Roy <saroy>
Component: micropythonAssignee: Charalampos Stratakis <cstratak>
Status: CLOSED NOTABUG QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: urgent Docs Contact:
Priority: urgent    
Version: rawhideCC: cstratak, mhroncok, python-packagers-sig
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["4a17e7d3-8824-4b73-a1f3-0ecc1e583654"]}
Fixed In Version: Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-04-11 04:48:11 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: 2454108    

Description Sandipan Roy 2026-04-02 05:42:13 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 04:48:11 UTC 
Micropython is not affected by this as MBEDTLS_SSL_PROTO_TLS1_3 is not enabled.