Microsoft Security Response Center guidance
Vendor revision: Nov 7, 2026Release Notes
Vulnerability intelligence
CVE-2026-120641. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.
Release Notes
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.
Source: NVD