UBUNTU-CVE-2026-120636
Dashboard / Vulnerabilities / UBUNTU-CVE-2026-120636
Summary:
Details: 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.
References: https://ubuntu.com/security/CVE-2026-120636, https://www.cve.org/CVERecord?id=CVE-2026-120636, https://lists.security.metacpan.org/cve-announce/msg/44874807/, https://github.com/leejo/CGI.pm/commit/9405ef3909ee94991a3474167aa53b9051bd8765, https://github.com/leejo/CGI.pm/commit/9405ef3909ee94991a3474167aa53b9051bd8765.patch, https://metacpan.org/release/LEEJO/CGI-4.72/source/lib/CGI.pm, https://metacpan.org/release/LEEJO/CGI-5.00/changes
Affected packages
Package
Name: libcgi-pm-perl
Purl: pkg:deb/ubuntu/libcgi-pm-perl?arch=source&distro=xenial
Affected ranges
Type: ECOSYSTEM
Events:
