{"id":"DEBIAN-CVE-2026-40080","details":"Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior are vulnerable to Open Redirect through a substring check rather than a host check at str_contains($referer, CACTI_PATH_URL). When the user's login_opts == '1' (redirect to referer after login), the function used $_SERVER['HTTP_REFERER'] directly.  An attacker could craft a referer such as https://evil.com/cacti/. Where CACTI_PATH_URL is /cacti/, the substring matches and the user is redirected to evil.com after login. The pre-existing validate_redirect_url() helper at lib/html_utility.php performed proper validation but was not invoked from auth_login_redirect(). This issue has been fixed in version 1.2.31.","modified":"2026-09-14T17:03:32.283614648Z","published":"2026-06-25T23:17:02.623Z","upstream":["CVE-2026-40080"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-40080"}],"affected":[{"package":{"name":"cacti","ecosystem":"Debian:12","purl":"pkg:deb/debian/cacti?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.24+ds1-1","1.2.24+ds1-1+deb12u1","1.2.24+ds1-1+deb12u2","1.2.24+ds1-1+deb12u3","1.2.24+ds1-1+deb12u4","1.2.24+ds1-1+deb12u5","1.2.25+ds1-1","1.2.25+ds1-2","1.2.26+ds1-1","1.2.27+ds1-1","1.2.27+ds1-2","1.2.28+ds1-1","1.2.28+ds1-2","1.2.28+ds1-3","1.2.28+ds1-4","1.2.30+ds1-1","1.2.30+ds1-2","1.2.30+ds1-3","1.2.31+ds1-1","1.2.31+ds1-2","1.2.31+ds1-3"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-40080.json"}},{"package":{"name":"cacti","ecosystem":"Debian:13","purl":"pkg:deb/debian/cacti?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.30+ds1-1","1.2.30+ds1-2","1.2.30+ds1-3","1.2.31+ds1-1","1.2.31+ds1-2","1.2.31+ds1-3"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-40080.json"}},{"package":{"name":"cacti","ecosystem":"Debian:14","purl":"pkg:deb/debian/cacti?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.31+ds1-1"}]}],"versions":["1.2.30+ds1-1","1.2.30+ds1-2","1.2.30+ds1-3"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-40080.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"}]}