Bug 2458227

Summary: CVE-2026-4786 python3.9: Python: Arbitrary code execution via command injection in webbrowser.open() API [fedora-all]
Product: [Fedora] Fedora Reporter: Marco Benatto <mbenatto>
Component: python3.9Assignee: Charalampos Stratakis <cstratak>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: high    
Version: rawhideCC: cstratak, mhroncok, python-maint, python-packagers-sig, thrnciar, torsava, vstinner
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["f6118815-adda-4e9e-881a-9d258f7a0b70"]}
Fixed In Version: python3.9-3.9.25-9.fc45 python3.9-3.9.25-9.fc44 python3.9-3.9.25-9.fc43 python3.9-3.9.25-9.fc42 Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-04-20 16:48:02 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: 2458049    

Description Marco Benatto 2026-04-14 15:49:43 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 2 Fedora Update System 2026-04-20 16:43:51 UTC
FEDORA-2026-77d74cf57f (python3.9-3.9.25-9.fc45) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-77d74cf57f

Comment 3 Fedora Update System 2026-04-20 16:48:02 UTC
FEDORA-2026-77d74cf57f (python3.9-3.9.25-9.fc45) has been pushed to the Fedora 45 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 4 Fedora Update System 2026-04-20 21:06:00 UTC
FEDORA-2026-85cf3694d8 (python3.9-3.9.25-9.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-85cf3694d8

Comment 5 Fedora Update System 2026-04-20 21:06:39 UTC
FEDORA-2026-7986d7f994 (python3.9-3.9.25-9.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-7986d7f994

Comment 6 Fedora Update System 2026-04-20 21:07:25 UTC
FEDORA-2026-60a694a385 (python3.9-3.9.25-9.fc42) has been submitted as an update to Fedora 42.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-60a694a385

Comment 7 Fedora Update System 2026-04-22 10:02:29 UTC
FEDORA-2026-7986d7f994 has been pushed to the Fedora 43 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-7986d7f994`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-7986d7f994

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 8 Fedora Update System 2026-04-22 11:05:32 UTC
FEDORA-2026-60a694a385 has been pushed to the Fedora 42 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-60a694a385`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-60a694a385

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 9 Fedora Update System 2026-04-22 11:24:57 UTC
FEDORA-2026-85cf3694d8 has been pushed to the Fedora 44 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-85cf3694d8`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-85cf3694d8

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 10 Fedora Update System 2026-04-30 00:53:54 UTC
FEDORA-2026-85cf3694d8 (python3.9-3.9.25-9.fc44) has been pushed to the Fedora 44 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 11 Fedora Update System 2026-04-30 01:20:46 UTC
FEDORA-2026-7986d7f994 (python3.9-3.9.25-9.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 12 Fedora Update System 2026-04-30 01:29:58 UTC
FEDORA-2026-60a694a385 (python3.9-3.9.25-9.fc42) has been pushed to the Fedora 42 stable repository.
If problem still persists, please make note of it in this bug report.