Bug 2567317

Summary: CVE-2026-120641 perl-CGI: perl-cgi: arbitrary file write via unsanitized upload filenames [fedora-all]
Product: [Fedora] Fedora Reporter: Marian Rehak <mrehak>
Component: perl-CGIAssignee: Jitka Plesnikova <jplesnik>
Status: MODIFIED --- QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: high    
Version: rawhideCC: jplesnik, mspacek, perl-devel
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["633bd1d7-8909-4c86-ade9-85ff2f43e0fe"]}
Fixed In Version: Doc Type: ---
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Documentation: --- CRM:
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2566598    

Description Marian Rehak 2026-11-05 14:30:08 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.

CGI versions before 5.00 for Perl return upload filenames with any client-supplied path, including ../ and Windows paths.

The name returned for an uploaded file is the filename parameter of the part's Content-Disposition header, unchanged.

An application that saves the upload under this name can be made to write outside the intended directory.
Comment 1 Fedora Update System 2026-11-06 09:53:05 UTC 
FEDORA-2026-a04615c725 (perl-CGI-5.02-1.fc45) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-a04615c725
Comment 2 Fedora Update System 2026-11-06 09:54:00 UTC 
FEDORA-2026-516e427bac (perl-CGI-5.02-1.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-516e427bac