{"id":"DEBIAN-CVE-2019-3878","details":"A vulnerability was found in mod_auth_mellon before v0.14.2. If Apache is configured as a reverse proxy and mod_auth_mellon is configured to only let through authenticated users (with the require valid-user directive), adding special HTTP headers that are normally used to start the special SAML ECP (non-browser based) can be used to bypass authentication.","modified":"2026-09-09T07:02:24.213496309Z","published":"2019-03-26T18:29:00.983Z","upstream":["CVE-2019-3878"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2019-3878"}],"affected":[{"package":{"name":"libapache2-mod-auth-mellon","ecosystem":"Debian:12","purl":"pkg:deb/debian/libapache2-mod-auth-mellon?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.14.2-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2019-3878.json"}},{"package":{"name":"libapache2-mod-auth-mellon","ecosystem":"Debian:13","purl":"pkg:deb/debian/libapache2-mod-auth-mellon?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.14.2-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2019-3878.json"}},{"package":{"name":"libapache2-mod-auth-mellon","ecosystem":"Debian:14","purl":"pkg:deb/debian/libapache2-mod-auth-mellon?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.14.2-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2019-3878.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}