{"id":"DEBIAN-CVE-2026-88834","details":"A flaw was found in BusyBox's httpd web server. When configured with system password authentication, a user existence oracle may exist in certain build configurations. An attacker could distinguish existing from non-existing usernames by observing authentication failure behavior. Impact is limited to username enumeration and requires non-default compile options or uncommon password file states; default BusyBox builds with shadow password support are not affected.","modified":"2026-10-14T06:00:19.745617222Z","published":"2026-10-13T17:17:48.203Z","upstream":["CVE-2026-88834"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-88834"}],"affected":[{"package":{"name":"busybox","ecosystem":"Debian:12","purl":"pkg:deb/debian/busybox?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.35.0-4","1:1.35.0-4+deb12u1","1:1.36.0-1~exp1","1:1.36.1-1","1:1.36.1-2","1:1.36.1-3","1:1.36.1-3.1","1:1.36.1-4","1:1.36.1-5","1:1.36.1-6","1:1.36.1-6~exp.1","1:1.36.1-7","1:1.36.1-8","1:1.36.1-9","1:1.37.0-1","1:1.37.0-10","1:1.37.0-10.1","1:1.37.0-2","1:1.37.0-3","1:1.37.0-4","1:1.37.0-5","1:1.37.0-6","1:1.37.0-7","1:1.37.0-8","1:1.37.0-9","1:1.38.0-1","1:1.38.0-2","1:1.38.0-3"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-88834.json"}},{"package":{"name":"busybox","ecosystem":"Debian:13","purl":"pkg:deb/debian/busybox?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.37.0-10","1:1.37.0-10.1","1:1.37.0-6","1:1.37.0-7","1:1.37.0-8","1:1.37.0-9","1:1.38.0-1","1:1.38.0-2","1:1.38.0-3"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-88834.json"}},{"package":{"name":"busybox","ecosystem":"Debian:14","purl":"pkg:deb/debian/busybox?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.37.0-10","1:1.37.0-10.1","1:1.37.0-6","1:1.37.0-7","1:1.37.0-8","1:1.37.0-9","1:1.38.0-1","1:1.38.0-2","1:1.38.0-3"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-88834.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N"}]}