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CVE-2026-120641                                      CPAN Security Group
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        CVE ID:  CVE-2026-120641

  Distribution:  CGI
      Versions:  before 5.00
      MetaCPAN:  https://metacpan.org/dist/CGI
      VCS Repo:  https://github.com/leejo/CGI.pm

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

Description
-----------
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.

Problem types
-------------
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory
  ('Path Traversal')

Workarounds
-----------
For deployments that cannot upgrade, do not use the client-supplied
upload filename as a path.

Solutions
---------
Upgrade to CGI 5.00 or later.

References
----------
https://metacpan.org/release/LEEJO/CGI-4.72/source/lib/CGI.pm
https://metacpan.org/release/LEEJO/CGI-5.00/changes
https://github.com/leejo/CGI.pm/commit/5379eb18e87b7f985613f5c4f7bae94478a4fa2f.patch