CVE-2026-120646

Unknown

Description

CGI versions from 4.71 before 5.00 for Perl allow denial of service via a plain string dereferenced as a symbolic reference in uploadInfo. uploadInfo dereferences its argument and calls its filename method without checking that it is an upload filehandle. A plain string naming a defined global variable, such as the parameter value from ?upload=0, is treated as a symbolic reference, and the method call on it dies.

SeverityUnknown

CVSS—

Exploit probability—

ProductCgi

PublishedNov 4, 2026

First seenNov 4, 2026

Weakness typeCWE-843CWE-843

How to fix

Update

CGI5.00 or later

Patches

github.com/leejo/CGI.pm/commit/a14a7decfdc18f2daf436d30df9b543e3f0f8da3.patch

Vendor advisories

metacpan.org/release/LEEJO/CGI-5.00/changes

Affected products

Product	Affected versions	Fixed in
CGI	4.71 ≤ v < 5.00	5.00

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