CVE-2026-120636

MediumCVSS 6.1/10Last modified Nov 9, 2026

Description

CGI versions before 5.00 for Perl allow open redirects and script injection via URLs built from REQUEST_URI in url and start_form.

url(-absolute=>1), url(-relative=>1) and the default start_form action are built from the client-supplied REQUEST_URI without validation. The result can be protocol-relative (//evil.example), absolute-form (http://evil.example/) or contain backslashes, and url(-relative=>1) can return a javascript: URL. Links and form posts built from these URLs can go to another host.

Metrics

CVSS 3.1 6.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-79CWE-601

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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CVE-2026-120636: Medium severity, CVSS 6.1 | Vulnix