{"id":"DEBIAN-CVE-2026-95811","details":"Lemonldap::NG::Handler versions from 2.0.0 before 2.16.10, from 2.17.0 before 2.21.6, from 2.22.0 before 2.23.4 for Perl allow an equivalent spelling of a path to bypass the locationRules that restrict it.  The handler matches each vhost's locationRules regular expressions against REQUEST_URI, the raw request line, while the web server routes on the path it has already percent-decoded and normalized. A request that percent-encodes a character of the path, inserts dot segments, or doubles a slash therefore reaches the protected resource under a URI that no rule regexp matches, and the vhost's default rule decides access. Deny rules, identity and group conditions, and unprotect and skip rules are bypassed alike.  Only a vhost whose default rule is more permissive than its other rules is affected. An authenticated user then reaches any URL a locationRules regexp was meant to restrict, but gains no more than that default rule already grants.","modified":"2026-09-27T19:00:09.233708446Z","published":"2026-09-25T02:16:54.677Z","upstream":["CVE-2026-95811"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-95811"}],"affected":[{"package":{"name":"lemonldap-ng","ecosystem":"Debian:12","purl":"pkg:deb/debian/lemonldap-ng?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.16.1+ds-deb12u10"}]}],"versions":["2.16.1+ds-2","2.16.1+ds-deb12u1","2.16.1+ds-deb12u2","2.16.1+ds-deb12u3","2.16.1+ds-deb12u4","2.16.1+ds-deb12u5","2.16.1+ds-deb12u6","2.16.1+ds-deb12u7","2.16.1+ds-deb12u8","2.16.1+ds-deb12u9"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-95811.json"}},{"package":{"name":"lemonldap-ng","ecosystem":"Debian:13","purl":"pkg:deb/debian/lemonldap-ng?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.21.2+ds-1+deb13u4"}]}],"versions":["2.21.2+ds-1","2.21.2+ds-1+deb13u1","2.21.2+ds-1+deb13u2","2.21.2+ds-1+deb13u3"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-95811.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"}]}