CVE-2026-120647

CriticalCVSS 9.8/10Last modified Nov 9, 2026

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.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-116

Affected software

No affected versions have been published.

Timeline

Published: Nov 4, 2026
Last modified: Nov 9, 2026
NVD status: Deferred

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