CVE-2026-120636 — Vulnerability intelligence

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Published: 2026-11-04T00:17:24.867

CVSS

Not available

CISA KEV

Not listed; not proof of no exploitation

Original source text (not a translation)

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.

Sources

• CVE-2026-120636
• Original advisory
• Original advisory
• Original advisory