========================================================================
CVE-2026-120647                                      CPAN Security Group
========================================================================

        CVE ID:  CVE-2026-120647

  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 allow Content-Disposition parameter
injection via unescaped double quotes in the header attachment filename

Description
-----------
CGI versions before 5.00 for Perl allow Content-Disposition parameter
injection via unescaped double quotes in the header attachment
filename.

header(-attachment => $name) writes $name into the quoted filename
parameter of Content-Disposition without escaping double quotes.

An application that passes request data as the attachment name can be
made to send a second filename parameter, changing the name the
response is saved under.

Problem types
-------------
- CWE-116 Improper Encoding or Escaping of Output

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/131280a5c5bc51b65797bd57ef0ee8da8468065b.patch